In this post I will summarize most common laptop hardware related problems and give some suggestions how to troubleshoot or repair them.

Problem 1.
Computer doesn’t turn on at all.

When you plug the AC adapter into the laptop, there are no lights turning on at all. When you push on the power button, nothing happens. The laptop appears to be completely dead, makes no sounds, no indications of life.

Possible problem:
- The AC adapter failed and the battery has no charge left. In this case test the AC adapter with a voltmeter. If it’s dead, replace it with a new one.
- DC jack failed and the motherboard doesn’t receive any power from the adapter. In this case the DC jack has to be replaced.
- Motherboard failed. The motherboard has to be replaced, if it’s not too expensive. Otherwise get ready to buy a new computer.

Here are some tips for testing AC adapter and DC jack.

Also, make sure to read step-by-step instructions for troubleshooting dead laptops.

Problem 2.
Screen is blank.

The laptop turns on, power LED lights up, cooling fan works but nothing appears on the screen. The screen is completely black and blank. There is no image on the screen at all.

Possible problem:
- This can be memory failure. It’s possible one of the memory modules failed. In this case you can try reseating memory modules to make sure they are making good contact with the slot. You can try removing memory modules one by one and test the laptop with only one module installed. You can try replacing memory modules.
- If reseating/replacing memory doesn’t help, try removing the hard drive, DVD drive, modem, wireless card, keyboard, etc… In other words, disassemble the laptop to bare minimum and test again. If the laptop still doesn’t turn on, most likely you have failed motherboard or processor.

Read this guide for bare bone system troubleshooting.

Problem 3.
Laptop turns on and off repeatedly.

The laptop turn on without showing any image on the screen. After a few seconds it turns off by itself. Then it turns on and off again.

Possible problem:
Most likely this is motherboard failure. You can try reseating/replacing memory as I described in the Problem 2. If it doesn’t help, probably the motherboard failed.

Problem 4.
Laptop makes noise while running.

The laptop turns on and everything works fine, except it makes some constant weird grinding or rattling noise.

Possible problem:
In most cases this noise is coming from the cooling fan or hard drive. Take a closer look at the cooling fan.

If the fan doesn’t spin but the the laptop makes noise, probably it’s coming from the hard drive. Back up all personal data as soon as possible and replace the hard drive.

Also, you can remove the hard drive and stat the laptop. If the laptop still makes noise, most likely it’s bad fan.

Problem 5.
Laptop shuts down or freezes.

The laptop runs properly but after a while it freezes or shuts down without any warning. When it happens, the bottom feels hot. Also, the cooling fan runs louder than usual.

Possible problem:
Most likely this is heat related issue. It happens because the fan heat sink is clogged with dust and the processor not cooling down properly. Cleaning the fan and heat sink from dust should fix it.

Here’s how you fix heat related problems.

Problem 6.
Battery not charging properly.

The battery stopped charging properly. It doesn’t charge at all or charges only after you adjust the position of AC adapter plug inside the power connector.

Possible problem:
- Failed battery.  If it doesn’t charge completely try reconnecting the battery first. Also, try running the laptop just from AC adapter with battery removed. If it runs fine from AC adapter, most likely it’s either bad battery or failed motherboard. Try replacing the battery first.

- Failed DC power connector. If the battery charges only after you adjust the position of AC adapter tip inside the connector, most likely this the DC jack failed.

Here are some tips for charging problems.

Problem 7.
Screen light fails.

The laptop starts properly but after a while the screen light turns off. The image still appears on the screen but it’s very dark.

In some cases the screen light never starts and all you can see is a very faint image.

Possible problem:
Most likely it’s either failed screen inverter or backlight lamp (CCFL) failure.  When either one fail, the backlight stops working.

In order to troubleshoot this, you’ll need some spare parts: either new working inverter or known good backlight lamp.

Read how to troubleshoot backlight failure.

Problem 8.
Strange or garbled image on the screen.

The laptop turns on properly but has a distorted or garbled image on the screen.

Possible problem:
- The graphics card failed. First of all, test your laptop with an external monitor or TV. If you see the same garbled image on the external screen, most likely the graphics card failed.
- If the problem appears only on the laptop screen, this can be related to one of the following: poor connection between the video cable and motherboard or screen. Also can be failed video cable or screen.

Here are examples of failed video and explanations how to narrow down the problem.

Also read why display shows strange colors.

Problem 9.
Some keyboard keys stopped working.

Some keyboard keys do not work at all or type wrong characters.

Possible problem:
Most likely the keyboard failed and they are not repairable. Read how to replace the keyboard.

Problem 10.
Keyboard has missing or broken keys.

A key got separated from the laptop keyboard.

Problem solution:
If a key separated from the keyboard, it’s still possible to fix it.
If you have many keys missing, probably it makes sense to replace the whole keyboard.

Read how to attach a key back .

Problem 11.
Repetitive beep sound on startup.

You turn on the laptop but there is no video on the screen. Instead, it starts making repetitive beeping sound. In some cases you can “fix” the problem temporarily if you press on the keyboard keys.

Problem solution:
Most likely you have stuck keys. In this case you’ll have to replace the keyboard.

Problem 12.
Liquid spill.

You spilled something on the laptop and it’s stopped working.

Problem solution:
Liquid spills are very dangerous and unpredictable. If it happened, turn off the laptop ASAP, remove the battery and do not use it until all internal parts are inspected for liquid damage.
It’s sill possible to make it work again.

Read how to deal with liquid spills.

Support this site.

 

146 Comments

  1. 1
    Alex Says:

    My problem is similar to Problem 5 but here’s the difference: the laptop turns down ONLY when I’m playing games. When I use Firefox it stays on all day long. Is it also overheating?

  2. 2
    cj2600 Says:

    @ Alex,

    My problem is similar to Problem 5 but here’s the difference: the laptop turns down ONLY when I’m playing games. When I use Firefox it stays on all day long. Is it also overheating?

    Definitely this sounds like heat related issue. When you run games, the CPU is loaded all the time and runs hot all the time. Probably the heatsink is clogged partially and CPU overheats when you running games. Try cleaning the heatsink. It should help.

  3. 3
    chris Says:

    On my notebook screen turns very dark. I tried new inverter but it didn’t do it. I am thinking about replacing the CCFL. Is it easy? Should I just buy a new screen?
    Thanks.

  4. 4
    cj2600 Says:

    chris,

    I am thinking about replacing the CCFL. Is it easy? Should I just buy a new screen?

    Replacing the CCFL is not easy. It’s mounted deep inside the laptop screen and the entire screen has to be disassembled.
    There is a good chance to damage the screen while replacing the CCFL.
    I would probably suggest replacing the screen.
    But if you have nothing to lose, you can try replacing the lamp. I explained this process here.
    http://www.laptoprepair101.com.....ccfl-lamp/

  5. 5
    Tim_1972 Says:

    Can you help?
    I have a HP Pavilion g6 laptop. 2,w,s,x keys stopped working. I want to replace the keyboard but I don’t know how.

  6. 6
    cj2600 Says:

    @ Tim_1972,

    I have a HP Pavilion g6 laptop. 2,w,s,x keys stopped working. I want to replace the keyboard but I don’t know how.

    This definitely sounds like a problem with the keyboard.
    You can use find keyboard replacement instructions in the HP service manual.
    1. Remove the battery.
    2. Remove one screw shown in the step 7.
    3. Remove the keyboard as it shown in steps 8-13.
    Good luck!

  7. 7
    Ben Says:

    In response to Alex. Yes, in my experience I can’t stress enough how many heat issues (as well as other issues) can be solved by blowing out the dust and dirt and cleaning the cpu heatsink fans and videocard heatsink and fan if there is one. There are also laptop cooling pads that you can use during the game if you really had to! I also would do malware and virus checks and scans to make sure there isn’t something unnecessarily running and using more CPU in the background than is necessary. Hope you have resolved your issues.

  8. 8
    Migzky Says:

    I have problem cnt u help me…i have lenovo t61 icant swicth on if i remove the battery and i turn on,the battery incator will light and blink and no response…thanks!

  9. 9
    cj2600 Says:

    @ Migzky,

    i have lenovo t61 icant swicth on if i remove the battery and i turn on,the battery incator will light and blink and no response

    First, I would test the laptop with another known good AC adapter. It’s possible your adapter failed.

  10. 10
    Rupinder Singh Says:

    I have dell 1440 laptop(CDrom is not working),due to some mistake, the windows crashed and everytime i power on it, this message appears “Boot Manager is missing, click ctrl+alt+del to exit” ,Is this a hardware problem? how could i install windows 7 back easily?

  11. 11
    Luis Says:

    Hello, i have an laptop toshiba that when i turn on with battery work every think ok… when i plug the ac cable, after a few seconds, its stops…breaks. I try without battery mas still same problem…

  12. 12
    Wahab Imran Says:

    please I want you to email me. what are the component that someone can heat on a laptop board and also my laptop was hanging on booting to window I now check the memory, harddisk, processor is till not working I now give it another engineer he now said that his going to work on the board and later the laptop become operational. pls what are the likely things he may do on that board. I beg u in the name of God pls email me back.

  13. 13
    cj2600 Says:

    @ Rupinder Singh,

    I have dell 1440 laptop(CDrom is not working),due to some mistake, the windows crashed and everytime i power on it, this message appears “Boot Manager is missing, click ctrl+alt+del to exit” ,Is this a hardware problem? how could i install windows 7 back easily?

    It’s hard to tell if this is hardware or software related issue. Could be just corrupted Windows OS. Could be hard drive failure.
    First, I would test the hard drive. Run internal Dell diagnostic utility and see if the hard drive passes test.
    If the hard drive is OK, you’ll have to find a CD-Rom. You cant try fixing the existing Windows OS installation by booting from Windows 7 CD and running OS repair.

  14. 14
    cj2600 Says:

    Luis,

    i have an laptop toshiba that when i turn on with battery work every think ok… when i plug the ac cable, after a few seconds, its stops…breaks. I try without battery mas still same problem…

    How it stops working? Just shuts off?
    Does the bottom of the laptop feel hot?

  15. 15
    cj2600 Says:

    @ Wahab Imran,

    what are the component that someone can heat on a laptop board

    Maybe the failed graphics card?
    Take a look at this post: http://www.laptoprepair101.com.....hics-chip/
    Is it what you are asking about?

  16. 16
    Brian Says:

    Hi does an ac adapter have to give a steady voltage for it to work correctly as I have an adapter that is reading an initial 19v but then drops back to 0 again without disconnecting anything.

    However I’m guessing the adapter itself is ok as the machine actually turns on it you hold the adapter plug in tight and sometimes also in a certain direction but its so sensitive it only stays on for a short time. Do you think its likely to be a mobo short or a problem with the DC jack? The DC jack has no loose connections on the board as far as I can see.

    Thanks
    Brian

  17. 17
    cj2600 Says:

    @ Brian,

    Does an ac adapter have to give a steady voltage for it to work correctly as I have an adapter that is reading an initial 19v but then drops back to 0 again without disconnecting anything.

    This is not normal. The AC adapter has to provide a steady voltage.

    I’m guessing the adapter itself is ok as the machine actually turns on it you hold the adapter plug in tight and sometimes also in a certain direction but its so sensitive it only stays on for a short time. Do you think its likely to be a mobo short or a problem with the DC jack?

    This could be one of the following:
    1. The AC adapter cable has a short inside. When you move the adapter plug or adapter cable you short cables and it stops providing power to the laptop.
    2. The DC jack separated from the motherboard and has to be resoldered or replaced.

    Here’s what I would do:
    1. Test voltage on the AC adapter tip. While testing the voltage, wiggle the power cable. If power cuts off, this is defective AC adapter. Replace it.
    2. If the AC adapter provides steady voltage even when you wiggle the cable, probably the AC adapter is bad and you have a problem with the DC jack. Try resoldering the DC jack.

    The DC jack has no loose connections on the board as far as I can see.

    It’s possible the solder joint has a micro crack which you cannot see. It’s a common DC jack failure.

  18. 18
    Dj Alex Says:

    I have read your posts and others trying to fix my problem w/presario v6305nr turns on blk screen & lights blink fan goes on & off and the cd drives runs and repeats itself over & over lights shuts off and then starts all over again.Any ideas. This notebook has been sitting around for a 2yrs,waiting for one day to shed some light, I just bought a recovery disc from hp for 25.00 and it worked for about 2 weeks then it started back up again, i never opened it up. i would greatly appreciate your response and known expertease on this nightmare to end Sincerly Alex Rhoades Las Vegas. I am a well known dj W/lights & sound, but not so with your field. i think you can give me some direction on what path to take.

  19. 19
    cj2600 Says:

    Dj Alex,

    I have read your posts and others trying to fix my problem w/presario v6305nr turns on blk screen & lights blink fan goes on & off and the cd drives runs and repeats itself over & over lights shuts off and then starts all over again.Any ideas.

    First of all, try minimizing the laptop as much as you can. Remove the battery, hard drive, DVD drive, etc… Try turning on again and see if you can get the image.
    Read this post on troubleshooting dead laptops: http://www.laptoprepair101.com.....e-problem/
    If there is no image, try reseating memory modules. Try removing them one by one. This could be memory related problem. If the laptop fails with either module installed, probably it’s not memory.
    From your description I suspect the motherboard failure. Maybe it’s one of those HP/Compaq laptops with well known NVIDIA graphics chip failure.
    You can try one of the following tricks:
    http://www.laptoprepair101.com.....p-laptops/
    or
    http://www.laptoprepair101.com.....hics-chip/

  20. 20
    George Says:

    Hi there, nice article! I am trying to repair a HP DV4000 on which keyboard gets crazy after some time.. i thought it was the keyboard so i removed and put external USB.. the same happens!! Random keys, alt is stucking and crazy things.. thought about virus and boot from Hiren’s with keyboard test, the same happens!! I replaced the multicontroller chip PC97551 which seems to be in charge for almost everything including keyboard scan, but still does the SAME!!! Any ideas? No corrosion or any liquid inside the laptop!…

    Thanks in advance!

  21. 21
    Md. Kabir Hossain Says:

    Dear Sir,

    I’m a Hardware Eng. but recently we have received Sony vio note book, the note book problem is when i connect power cable than auto power on & instant power off stay time 5-10 sec. but I’m not finding any damage & hot parts, yet, i was soldering whole Motherboard, but result 0000. So in this situation what can i do? please help me.

    Problem 2: hp pavilion dv 3000, when i switching power than instant off stay time 2-5 sec. normally just i was slightly heated. but i can’t found any shock, & don’t hot motherboard, please give me solution early as possible with pic. (if possible)

    Thank You*

    Md. Kabir Hossain Kiron
    CEO
    Electro Care
    Dhaka Bangladesh

  22. 22
    blessing Says:

    i have an hp laptop, problem is that all ports on the machine are disabled meaning they are not functional and you cannot get anything into the machine or out of the machine.when you check the settings it says all ports are disabled and when you enable them and try to use a stick or flash it would have disabled already by itself.what could be the problem and how do you fix it.

  23. 23
    cj2600 Says:

    @ George,

    I am trying to repair a HP DV4000 on which keyboard gets crazy after some time.. i thought it was the keyboard so i removed and put external USB.. the same happens!! Random keys, alt is stucking and crazy things.. thought about virus and boot from Hiren’s with keyboard test, the same happens!! I replaced the multicontroller chip PC97551 which seems to be in charge for almost everything including keyboard scan, but still does the SAME!!! Any ideas? No corrosion or any liquid inside the laptop!…

    Sounds like the motherboard related failure. Sorry cannot help here. I don’t fix motherboards on the component level.

  24. 24
    cj2600 Says:

    @ Md. Kabir Hossain,

    You can try this method for troubleshooting dead laptops.
    http://www.laptoprepair101.com.....e-problem/

  25. 25
    cj2600 Says:

    @ blessing,

    i have an hp laptop, problem is that all ports on the machine are disabled meaning they are not functional and you cannot get anything into the machine or out of the machine.when you check the settings it says all ports are disabled and when you enable them and try to use a stick or flash it would have disabled already by itself.

    This is a very weird problem. I’ve never seen something like that.
    Does it say that all ports are disabled in the BIOS setup menu? Is it an error message in Windows?

  26. 26
    Gary Says:

    Used a Fedora DVD-ROM for A CET class..Didnt install it but now windows is not booting….ive tried everything from repair screen to last known settings but no luck…diags show error 2000-0146…its a dell inspirion N5030

  27. 27
    cj2600 Says:

    @ Gary,

    ive tried everything from repair screen to last known settings but no luck…diags show error 2000-0146…its a dell inspirion N5030

    It looks like error 2000-0146 could be hard drive related.
    After some research I found this thread on Dell support website.

  28. 28
    Nikkita Says:

    Help! Okay the LCD screen on my laptop was broken, cracked in the corner after someone closed it with a pen on the keyboard..

    I decided to replace the screen myself.. I took it apart got the serial number and ordered the replacement screen. Installed the new screen and nothing shows up except colored portions and lines. Figured it was a defective screen and sent it back for a replacement.

    Got the replacement screen and the same thing happens!

    Am I doing something wrong? Or is it that I just keep getting defective screens?

    Thanks..

  29. 29
    Tejaswi Says:

    Hi..
    I dont have a problem with my screen and keyboard..but the screws that connect this two parts..are coming out..and that connection between the two is broken,,i cant fold my laptop..
    please help me with this..

  30. 30
    Edy Says:

    Pls help!!! How to override bios p/word of toshiba satellite 100A laptop. Rgds. Edy.

  31. 31
    lino Says:

    hello…my acer aspire 5550 wont power on. the power button automatically lights on without pressing if the power cord is connected to the outlet. i remove the battery but no luck. please help me…..thanks

  32. 32
    cj2600 Says:

    @ Nikkita,

    Okay the LCD screen on my laptop was broken, cracked in the corner after someone closed it with a pen on the keyboard..

    I decided to replace the screen myself.. I took it apart got the serial number and ordered the replacement screen. Installed the new screen and nothing shows up except colored portions and lines. Figured it was a defective screen and sent it back for a replacement.

    Got the replacement screen and the same thing happens!

    Am I doing something wrong? Or is it that I just keep getting defective screens?

    Maybe your new screens are not compatible.
    What happens if you install the cracked screen back into the laptop? Can you get image on the cracked screen?
    If your old screen shows image but new screens have only vertical lines, this is some kind of compatibility issue.
    Make sure your new screen has same resolution as the original one.

  33. 33
    cj2600 Says:

    @ Tejaswi,

    I dont have a problem with my screen and keyboard..but the screws that connect this two parts..are coming out..and that connection between the two is broken,,i cant fold my laptop..

    Sounds like broken hinges. The only way to fix it is replacing the hinges I guess. What is your laptop model?

  34. 34
    cj2600 Says:

    @ Edy,

    Pls help!!! How to override bios p/word of toshiba satellite 100A laptop. Rgds. Edy.

    Did you mean Toshiba Satellite A100 laptop?
    There should be two pads on the motherboard under the memory module. You’ll have to short those pads with a screwdriver for a few second.
    Could be similar to Satellite A135. http://www.youtube.com/watch?v=Eo1gg1EZV-o
    The guy is cutting a piece of wire to short those pads. It’s not necessary. Just use a small flathead screwdriver.
    The pads might look like that: http://i125.photobucket.com/al.....BIOS_C.jpg

    In some Satellite A100 laptops the pads could be located under the keyboard. Take a look at this guide: http://techniciansguides.blogs.....sword.html

  35. 35
    cj2600 Says:

    @ lino,

    my acer aspire 5550 wont power on. the power button automatically lights on without pressing if the power cord is connected to the outlet. i remove the battery but no luck.

    Remove as many parts as you can. Battery, hard drive, memory. Disconnect the keyboard if you can.
    Now plug in the AC adapter again. If the problem still there and power button lights up by itself, probably this is motherboard failure.
    You can try this troubleshooting technique: http://www.laptoprepair101.com.....e-problem/

  36. 36
    Tejaswi Says:

    Mine is Dell Inspiron 1525.

    @ Tejaswi,

    I dont have a problem with my screen and keyboard..but the screws that connect this two parts..are coming out..and that connection between the two is broken,,i cant fold my laptop..

    Sounds like broken hinges. The only way to fix it is replacing the hinges I guess. What is your laptop model?

  37. 37
    wazeer Says:

    My toshiba satellite laptop crashed when connected to ac outlet and used at the same time.Have to charge the battery and unplug it so that I may use it normally.Could you please help.
    Thank you.

  38. 38
    Jasmine Says:

    So I dropped my Asus laptop and now when I turn it on it tells me to Reboot our put in a media reboot and there is a clicking sound. But I don’t know how/have either. I’m going to try and contact the manufacturer. is that the best thing to do?

  39. 39
    MAcdhimz Says:

    Thank You so much.. I’ve learned a Lot for this Site. it is very Helpful. Keep it Up Guys.

  40. 40
    Chandra Says:

    All files turned to adobe while working on net. Sony Vaio Lap top and OS Windows-7 home basic.
    Thanks

  41. 41
    Akhidenor james Says:

    Pls, my toshiba laptop goes blank whenever the hardisk is instaled but come on with figures & numbers when the hardisk is removed. What do l do?

  42. 42
    cj2600 Says:

    @ Chandra,

    All files turned to adobe while working on net. Sony Vaio Lap top and OS Windows-7 home basic.

    Probably file association is wrong. Try reseating it back to default.

  43. 43
    cj2600 Says:

    @ Aknidenor james,

    my toshiba laptop goes blank whenever the hardisk is instaled but come on with figures & numbers when the hardisk is removed

    I cannot understand your question. What figures and numbers? Please provide a better description.

  44. 44
    siva Says:

    thank you. really helped me. keep up the good work.bye.

  45. 45
    Sid Trevor Says:

    Hi
    I have replaced the keyboard in my Sony Vaio laptop but i am still getting the same problems as before.
    i am getting the wrong symbol for different keys and was wondering if you could give me some idea what the cause could be.
    Thanks Sid

  46. 46
    s r gowda Says:

    please tell me the secrets to checkup the power supplys in laptop main board
    thanks and regards your suggessions are wortful on effctive work

  47. 47
    hossen Says:

    my asus 1001pxd shows “primary hard disk error”what is the solution of it?

  48. 48
    Vanita Says:

    3 moth before i bye a new sony vio laptop having model no-VPCEG35EN.
    But now its stat hanging for long periods of time.

    Please tell me what should i do?

  49. 49
    Laurie Says:

    I installed a wifi card internally, then my Dell laptop would not power on??? What did I do wrong, do you think I fried it?

  50. 50
    cj2600 Says:

    @ Laurie,

    I installed a wifi card internally, then my Dell laptop would not power on??? What did I do wrong, do you think I fried it?

    What happens if you remove the wireless card and start the laptop?

  51. 51
    ancha Says:

    I have a problem with my laptop Sony Vaio VGN CR353 series..
    After my mom fill some water on top of it my laptop won’t start normally with nothing respond at all from the led, the fan and etc…

    i found this great website and i follow all the basic repair and after i clening up the motherboard with alcohol and tootbrush like you said :D and finally i’ve progress my laptop begin to show some reaction..

    If you don’t mind please look up my short video that shows the recent condition og my laptop in

    http://www.youtube.com/watch?v.....e=youtu.be

    hopefully you can give me any clue from your experience in laptop repairing.. maybe you’ve already faces the same problem :D

    Big apologize for my bad english :D
    Big thanks for any responds :D
    keep up the good work *two thumbs up

  52. 52
    prashanth Says:

    my acer laptop mouse is not working kindly guide me

  53. 53
    Syndulum Says:

    not sure if you installed the hard drive in a correct manner. Just to be sure about it, you can access the bios (normally F2 or f10 key while restarting) by hitting the bios key during Power on Self Test. If the hard drive is not showing in the list of drives, you probably have either connected the wires wrong or may be your HD is dead. Besides, you can also look for the green light near the keyboard that has the pic of a HD. If that is not lit or not flickering, there is something wrong either with Hd or the way it is connected.

  54. 54
    sanjay vyas Says:

    thanks
    really helpful
    sanjayvyas

  55. 55
    Dean Says:

    Hi.

    I have a HP Pavilion dv7 laptop, I know that the battery has died in it. It was going bad for some time and now it’s dead. My issue is this. The Wifi won’t connect to my router although it see it and has a full signal. I sent it in for repair as it has a warranty on it, and they sent it back saying the dead battery was the cause.

    Is this true, can a dead battery cause your wifi to do this even though you are plugged into the outlet?

    Thanks, Dean. (PS OP feel free to email me if you want / can)

  56. 56
    waskita Says:

    very helpfull artcles….

    thank you so much

  57. 57
    Samuel Says:

    Excellent description.

    My problems is similar to what is shown above. The back light of my laptop screen goes off after few seconds while booting. Even though I can see the screen and give login password. I can see the desktop icons and work but have to have a closer look at screen or use other light like flash or torch. In two cases light comes back also. First, when I close and open the lid again and secondly, when the mouse pad is touched after the display of off as per time set (thus the lids is not moved in this case). In every case the light remains for not more that 4-5 seconds.

    Please suggest what can be the problem and if possible the cost involved.

    Thanks for the time and considering to reply.

  58. 58
    Jacus aucamp Says:

    Hello,

    My Dell laptop just died on me an hour ago and it’s totally dead,no lights come on either,its just dead!
    I check the ac adapter and that is working fine on my other dell but this one is dead. I have most of my design work on my pc as im a graphic designer and i created my portfolio on this pc 2 years ago and now what do i do?
    Please help. Any other ideas.

    Thanks

    Jacus

  59. 59
    cj2600 Says:

    @ Jacus aucamp,

    I check the ac adapter and that is working fine on my other dell but this one is dead.

    If the AC adapter works with another laptop, probably it’s not the adapter failure.
    Most likely it’s either bad DC jack or failed motherboard.

    I have most of my design work on my pc as im a graphic designer and i created my portfolio on this pc 2 years ago and now what do i do?

    In order to backup data from the laptop you can do the following. Remove the hard drive from the laptop and install it into an external USB enclosure. Connect the enclosure to any other working PC and get your files.

    By the way, if you have a SATA hard drive you can connect it directly to the PC. Most laptop SATA hard drives has same type of connector ad desktop hard drives.

  60. 60
    fink Says:

    i’ve got a question:

    my laptop hangs sometimes and it won’t shut even if the battery is removed. What could possibly be the cause n what’s the solution to this? please help.

  61. 61
    Shirley Brown Says:

    Hi!
    While I was keyboarding on my Acer today, I noticed that one of the keys doesn’t give me the right symbol when I use the shift key. It repeatedly gives me the same incorrect one. Any ideas about what I may have accidentally touched? Thanks

  62. 62
    rey cjrj Says:

    hi..good day i have problem with my hp presario cq20 laptop. at first when i hit the power button it will light and it will turn off before the start up booting finish. and if i power it on again and press f8 it will open in safe mode even for hours….i dont know why if in normal mode not goes thru..i format it but it doesnt work at all please help me….thanks.

  63. 63
    cj2600 Says:

    @ rey cjrj,

    good day i have problem with my hp presario cq20 laptop. at first when i hit the power button it will light and it will turn off before the start up booting finish. and if i power it on again and press f8 it will open in safe mode even for hours….i dont know why if in normal mode not goes thru.

    I would run the hard drive and memory test first. Enter the BIOS setup menu. It’s likely that you HP has utilities for testing the hard drive and memory embedded into the BIOS.

  64. 64
    cj2600 Says:

    @ Shirley Brown,

    While I was keyboarding on my Acer today, I noticed that one of the keys doesn’t give me the right symbol when I use the shift key. It repeatedly gives me the same incorrect one. Any ideas about what I may have accidentally touched?

    What key you are asking about?
    Maybe NumLock enabled?

  65. 65
    Mike Says:

    I have a Toshiba Satellite M305-S4910 with 3.9 amperage output. Recenetly I had to purchase a new AC adapter 120W with 6.32 amperage. I wanna know if this big difference in AC amperage will hurt my laptop or not.
    Thanks for any advice.

  66. 66
    Jaekwon Says:

    My Packard Bell Easynot L4 fell and the DC Jack broke.
    I replaced this, but now when powered up the power light comes on aswell as the fan. The screen is black, but I dont think it is going any further as the hard drive light doesnt come on/flash.
    I just read above to try an external monitor. Other than that is it curtains for the laptop ?

  67. 67
    Shashi Says:

    I have a hp laptop. when I push the power button it shows a brief power on then it goes off. Same thing happens every time I push the power botton on.

  68. 68
    cj2600 Says:

    @ Shashi,

    I have a hp laptop. when I push the power button it shows a brief power on then it goes off. Same thing happens every time I push the power botton on.

    I would test the AC adapter. It’s possible the AC adapter failed and the battery doesn’t have enough time to start the laptop.
    Test the laptop with another AC adapter.

  69. 69
    cj2600 Says:

    @ Jaewon,

    My Packard Bell Easynot L4 fell and the DC Jack broke.
    I replaced this, but now when powered up the power light comes on aswell as the fan. The screen is black, but I dont think it is going any further as the hard drive light doesnt come on/flash.
    I just read above to try an external monitor. Other than that is it curtains for the laptop ?

    Did you check the memory modules? Maybe one of the modules not seated correctly. Try reseating memory modules. Also, test the laptop with only one module installed.
    Did you try turning it on with the hard drive removed?

  70. 70
    cj2600 Says:

    Mike,

    I have a Toshiba Satellite M305-S4910 with 3.9 amperage output. Recenetly I had to purchase a new AC adapter 120W with 6.32 amperage. I wanna know if this big difference in AC amperage will hurt my laptop or not.

    If your new AC adapter has THE SAME voltage but higher amperage, it’s OK to use. It will not damage the laptop.

  71. 71
    Shashi Says:

    Thanks for reply of my previous mail (No.67 and 68). Yes I had tested my laptop with another AC adaptor. But it did not solve my problem.

  72. 72
    cj2600 Says:

    @ Shashi,

    Yes I had tested my laptop with another AC adaptor. But it did not solve my problem.

    This could be one of the following:
    1. DC jack failed. You can try replacing it with a new one.
    2. If replacing the DC jack doesn’t help, most likely this is motherboard failure. Probably in this case the laptop not worth fixing (depends on the model).

  73. 73
    Mac Says:

    I had problem 5 happen at first with my toshiba laptop where it randomly froze.I tried to restart it, but now I’m encountering problem 2. Some times it turns back on, but it will just crash again. What do I do?

  74. 74
    Bamire Jamiu Says:

    On booting my Toshiba Laptop Satellite C6601QF operating Windows 7 Home Basic, it displays the following message:

    Windows has encountered a problem communicating with a device connected to your computer. This error can be caused by unplugging a removable storage device such as external USB drive while the device is in use, or by faulty hardware such as a hard drive or CD-ROM drive that is failing. Make sure any removable storage is properly connected and then restart your computer.

    If you continue to receive this error, contact the hardware manufacturer.

    Status: 0xc00000e9
    Info: An unexpected I/O error has occurred.

    —- end of message.

    I REALLY NEED EVERYTHING ON THIS LAPTOP BADLY. PLEASE HELP ME OUT.

    MANY THANKS.
    JAY.

  75. 75
    lokesh Says:

    hi,
    i am lokesh from india in my leaptop cd got stucked in Cd rom how can i ejact the cd

  76. 76
    shivajee Says:

    while i watching movie on my lenovo laptop it stuck no. of times so i take out battery after that when i restart system is not responding .so ,i try booting but again it stop at setup. so, please suggest me any solution.

  77. 77
    Raji Says:

    When I connect the AC adapter to charge my HP Compaq laptop, the charging light illuminates on the laptop but the battery doesn’t charge up. Also, on using the AC adapter, the laptop becomes slow. I have recently replaced my battery so guess there is no issue with that. Should I be replacing my AC adapter? Please advise.

  78. 78
    Tariq Says:

    Hi when I turn on laptop just power lid on. no fan starts, no logo, no hdd lid. blank screen whats the problem?

  79. 79
    Antonio Says:

    On booting a Toshiba Laptop Satellite A60-S166 operating Windows XP, it displays the following message:

    No bootable CD in ATAPI CD ROM

    INTEL UNDI,PXE-2.0(build 082)
    For REALTEK RTL 8139(X)/8130/810X PCI FAST ETHERNET CONTROLLER V2.13(020326)
    PXE-E61= Media test failure, check cable.
    PXE-MOF: Exiting PXEE Rom.

    Press any key when ready.

    If I press F1 the screen shows:

    IN TOUCH WITH TOMORROW TOSHIBA

    Please, can you help me,

  80. 80
    prashant Says:

    i have smsung rv509 laptop on pressing power button the mother board screen displays but the it keeps showing a black screen with cursor blinking on top corner
    i installed the os 3 to 4 times every time os is instaled properly but after installation the laptop comes in same condition of black screen with cursor
    pls help

  81. 81
    cj2600 Says:

    @ prashant,

    i have smsung rv509 laptop on pressing power button the mother board screen displays but the it keeps showing a black screen with cursor blinking on top corner
    i installed the os 3 to 4 times every time os is instaled properly but after installation the laptop comes in same condition of black screen with cursor

    Try reconnecting the hard drive. Maybe it’s bad connection between the hard drive and motherboard. Also, it’s possible the hard drive is failing.

  82. 82
    cj2600 Says:

    @ Antonio,

    On booting a Toshiba Laptop Satellite A60-S166 operating Windows XP, it displays the following message:

    No bootable CD in ATAPI CD ROM

    INTEL UNDI,PXE-2.0(build 082)
    For REALTEK RTL 8139(X)/8130/810X PCI FAST ETHERNET CONTROLLER V2.13(020326)
    PXE-E61= Media test failure, check cable.
    PXE-MOF: Exiting PXEE Rom.

    Press any key when ready.

    It’s possible the laptop will not boot because it doesn’t see the hard drive.
    Enter the BIOS setup menu and check if the hard drive is detected.
    Try reconnecting the hard drive.
    Connect hard drive to another working PC and check out if it spins.
    This could be hard drive failure.

  83. 83
    cj2600 Says:

    @ Tariq,

    Hi when I turn on laptop just power lid on. no fan starts, no logo, no hdd lid. blank screen whats the problem?

    Possible memory failure. Access memory modules and remove them one by one. Test the laptop with only one module installed.

  84. 84
    cj2600 Says:

    @ Raji,

    When I connect the AC adapter to charge my HP Compaq laptop, the charging light illuminates on the laptop but the battery doesn’t charge up. Also, on using the AC adapter, the laptop becomes slow. I have recently replaced my battery so guess there is no issue with that. Should I be replacing my AC adapter?

    It’s hard to tell what is wrong. Yes, there is a chance of bad AC adapter.
    I would test the laptop with another AC adapter. If the problem still there, probably this is motherboard related failure.

  85. 85
    cj2600 Says:

    @ shivajee,

    while i watching movie on my lenovo laptop it stuck no. of times so i take out battery after that when i restart system is not responding .so ,i try booting but again it stop at setup. so, please suggest me any solution.

    This could be memory failure. Try removing memory modules one by one and test the laptop with each module separately.

  86. 86
    ana Says:

    my laptops screen suddenly turns to one color like sometimes it turns to purple/green/red and it wouldn’t let me do anything. it just freezes to a color and it makes weird noises like how a tv will with a black and white flashing screen except my laptop just turns to a color. and this just happens randomly

  87. 87
    ana Says:

    my laptops screen suddenly turns to one color like sometimes it turns to purple/green/red and it wouldn’t let me do anything. it just freezes to a color and it makes weird noises like how a tv will with a black and white flashing screen except my laptop just turns to a color. and this just happens randomly. and i cant do anything until i shut it off from the power button.

  88. 88
    gaurav Says:

    My inspiron 1545 about 2.5 years old is not turning on when connected with ac supply with and without battery and there is no sign of led lid indicators, its like completly dead. Only charger shows green light.
    About 3 months earlier windows was showing “consider replacing your battery “but i didnt changed the battery and used the laptop for 2 months and now its dead. Now i Dont know whether only the battery is the problem or the charger or the motherboard or something else.

  89. 89
    Ehtesham Khan Says:

    My Toshiba Satellite A205-S5880 laptop turns off frequently in normal mode but it works fine in safe mode.
    please help…

  90. 90
    Sam Says:

    Hey have a problem with videos on my laptop. It use to be able to play 360p and up now it wont. I know its not a hardware problem but could use the help. Thanks.

  91. 91
    Sapna Says:

    Hi!! My laptop is not starting when I starting it on!!!Can you tell me where can I fix it???Especially in NY and NJ?? And suggetions would definitely help!!!Thanks!!!

  92. 92
    Ed Wingfield Says:

    I Dell Inspiron M5030, I replaced the screen but now the hard drive in the Bios is reading 0 GB. Any help ?

  93. 93
    khouloud Says:

    in my laptop the screen show NTLDR manque in white and the screen in black pleaaaaaaase help

  94. 94
    David Says:

    your articles are very useful and we do appreciate alot. i have a problem with my dell screen. when trying to adjust the colour it shows locked symbol asking for password. please help.

  95. 95
    cj2600 Says:

    @ David,

    i have a problem with my dell screen. when trying to adjust the colour it shows locked symbol asking for password.

    Make sure to login as an administrator. Probably you have a few user accounts on your laptop and your account doesn’t have administrative rights.

  96. 96
    Mark Rea Says:

    Thanks for exhausting list of advices, it helped to locate and fix the issue with our office HP laptop.
    Good job!

  97. 97
    lhee whoo Says:

    i have this issue on my laptop, it works fine when run in battery but it will stop working or sometimes hangs up when ac power was attached to to the dc jack..(toshiba satellite L300)
    anybody can share his/her knowledge will be a great help..

  98. 98
    keith Says:

    Hey i haved problem with my HP laptop.

    I know the battery is bad so i only use external power, its fine until when i turn it on its not working.. NO POWER, NO LIGHT, except the WHITE LED INDICATER beside DC JACK but it turns off after a while..

    is it possible to be motherboard failure or just DC JACK problem?

    please help

  99. 99
    praveen Says:

    colling fan not working

  100. 100
    mohammad khasim Says:

    hi!
    i have a hp laptop,actually whenever i was startig a laptop,i get the display only till it will execute booting function, after that it will turn off automatically.plz help what the problem is going on?

  101. 101
    aneeq Says:

    superbbbbbbbbbbbbbbbb

  102. 102
    Pedram Says:

    Hi, I have a Toshiba A200, at the very bottom of the LCD, it is like a ribbon with disorder horizontal white lines so that I can’t see anything on that area the rest of the LCD screen is okay. I connect it to an external monitor and the entire screen is fine. So what can be the problem?

    Thank you.

  103. 103
    cj2600 Says:

    @ Pedram,

    I have a Toshiba A200, at the very bottom of the LCD, it is like a ribbon with disorder horizontal white lines so that I can’t see anything on that area the rest of the LCD screen is okay. I connect it to an external monitor and the entire screen is fine. So what can be the problem?

    Most likely this is defective LCD screen. I think you’ll have to replace the screen.

  104. 104
    yirga Says:

    I have Toshiba laptop it doesnt turn on when i plug the adaptor only the AC power and battery LED is turned on. what will be possible reasons

  105. 105
    CyberShot Says:

    Toshiba Satellite A300
    When turning on Display comes and Turn off Automatically

  106. 106
    hemant Says:

    i have this issue on my laptop, it works fine when run in battery but it will stop working or sometimes hangs up when ac power was attached to to the dc jack..(toshiba satellite L300)

  107. 107
    Christopher Coleman Says:

    I have a Sony Viao Laptop that was dropped and now it boots to a black screen that says Operating System not found. My first guess was that the hard drive was bad/corrupted and after research and running some scans I was right. MY question is how do I know that is all that is wrong? I don’t want to buy a new HDD then find out that other components were damaged. I was thinking of using a HDD from another laptop and putting it in the laptop that was dropped but I guess I want to know how to diagnose other components. What tools/software scans do you recommend? Also with the failed HDD do you think if I bought and IDE connector/adaptor I could connect this to a desktop and possibly recover the data or ever get the HDD to work again? Is there an USB IDE connector to hook up an hdd?

  108. 108
    gaurav Says:

    sir
    iwant know that aser aspire one model ZG5 no display

  109. 109
    Ferdz Says:

    Hello everyone!

    i have LG R410 i notice that some is are not working like C, Y, and Q but but when i press it sequence it will works but then after a second it will not work again any suggestion how to fix this???

  110. 110
    cj2600 Says:

    @ Ferds,

    i have LG R410 i notice that some is are not working like C, Y, and Q but but when i press it sequence it will works but then after a second it will not work again any suggestion how to fix this???

    Sounds like failing keyboard.
    You can try reseating the keyboard cable on the motherboard. If this doesn’t help, try replacing the keyboard.

  111. 111
    cj2600 Says:

    @ Christopher Coleman,

    I have a Sony Viao Laptop that was dropped and now it boots to a black screen that says Operating System not found. My first guess was that the hard drive was bad/corrupted and after research and running some scans I was right. MY question is how do I know that is all that is wrong?

    You can download Ubuntu OS and burn it on a DVD. After that boot your laptop from this disc and test in the Ubuntu environment. If everything works fine in Ubuntu OS, probably only the hard drive is bad.

    I was thinking of using a HDD from another laptop and putting it in the laptop that was dropped.

    You’ll have to reinstall OS on the new drive in order to use it. Most likely the OS from another computer will not run properly in your laptop.

    Also with the failed HDD do you think if I bought and IDE connector/adaptor I could connect this to a desktop and possibly recover the data or ever get the HDD to work again? Is there an USB IDE connector to hook up an hdd?

    It depends on the hard drive failure. In some cases it’s possible.
    You’ll have to scan for data using a data recovery software. Something like GetDataBack (for NTFS or FAT file system) or R-Studio.
    You can purchase an external USB enclosure for IDE hard drives. Here’s an example: http://www.laptoprepair101.com.....enclosure/

  112. 112
    cj2600 Says:

    @ hemant,

    i have this issue on my laptop, it works fine when run in battery but it will stop working or sometimes hangs up when ac power was attached to to the dc jack..(toshiba satellite L300)

    Did you test the laptop with another AC adapter?

  113. 113
    cj2600 Says:

    @ CyberShot,

    Toshiba Satellite A300
    When turning on Display comes and Turn off Automatically

    Does the laptop still work after the display turns off?
    Take a very close look on the screen. Do you see a very faint image on the screen?
    If the laptop still works and you can see a very faint image on the screen this could be failed inverter board or failed LCD screen (actually failed backlight lamp inside the screen). I would try replacing the inverter board first.

  114. 114
    cj2600 Says:

    @ yerga,

    I have Toshiba laptop it doesnt turn on when i plug the adaptor only the AC power and battery LED is turned on. what will be possible reasons

    Could be failed memory.

  115. 115
    phbgjf Says:

    When I plug the AC adaptor a faint click noise sounds but no light is turned on. When I connect battery and push turn on button similar faint noises sound but no lights either. The laptop actually turned off suddenly while writing an email.

  116. 116
    ANonymous Says:

    someone please help me…..my laptop turn off by itself when i was playing games(games with high graphics)..when i play an old games it work just fine…even when i watch movies or play facebook….it only turn off when i play new games…please help me… :(

  117. 117
    aakash Says:

    sir,
    when i give power to my toshiba satellite a100 laptop through ac adpter it turns off on that time only ac power and battery led are on . i have checked my ac adepter through multimeter,it has no problem.

  118. 118
    Christian Says:

    I have a Lenovo G580 which when booted displays a dark blank screen however, when I connect it to an external monitor it will display everything fine on the external monitor. The built in display doesn’t want to display anything.

  119. 119
    Jayesh Says:

    I have HP G42-456TU Notebook PC
    Serial Number: CNF045BB4G
    Product Number: XV919PA

    Whenever I unplugged my charger laptop start working slow. when charger is in plug its working normal. Give me hints/support how to fix it.

  120. 120
    cj2600 Says:

    @ Jayesh,

    Whenever I unplugged my charger laptop start working slow. when charger is in plug its working normal. Give me hints/support how to fix it.

    Maybe you have some power settings enabled? On some laptops you can reduce the CPU speed when it runs off the battery. It makes the laptop slower while running from the battery but improves battery life.

  121. 121
    nil Says:

    May I know what is the problem of laptop with blank screen and the hard disk is not running (no beep sound) during start up? Thanks.

  122. 122
    cj2600 Says:

    @ nil,

    May I know what is the problem of laptop with blank screen and the hard disk is not running (no beep sound) during start up?

    Does the laptop turn on at all? Can you see any lights?

  123. 123
    star nguyen Says:

    my screen dosent turn on but the power button and locks lights turn on and the fan is not running as well please help windows 7 sony vaio laptop

  124. 124
    shahzad Says:

    when i turn on my laptop the screen turns on for a second completely normal showing everything clearly but then it goes off. when i press the lid button(which turns off the screen) and then release it the screen lights up for a second and then goes off. whats the reason?

  125. 125
    Anuja Says:

    Thanx for the article…..
    But I had a new problem…..
    the problem is that when i close the lid one of the junction(there are two junction joining keyboard and lid) is coming out making some weired noise i don’t know how to fix it permanently it is totally a hardware problem

  126. 126
    liam Says:

    Hi can I ask I had to replace a power button unit on a hp q70 put new unit in no prob but still won’t work could it have got the motherboard.thanks

  127. 127
    cj2600 Says:

    @ liam,

    Hi can I ask I had to replace a power button unit on a hp q70 put new unit in no prob but still won’t work could it have got the motherboard.thanks

    Why do you think it was a power button related problem?
    What happens when you push on the power button? Any lights on the laptop?

  128. 128
    Satya Says:

    my hcl laptop is working only in power cable, without power cable it is not working using battery, battery is ok I tested it in another laptop, when i swith off the power the lap goes off within 3 secs

  129. 129
    carlo Says:

    thanks for this information it will really helpful.

  130. 130
    cj2600 Says:

    @ Satya,

    my hcl laptop is working only in power cable, without power cable it is not working using battery, battery is ok I tested it in another laptop, when i swith off the power the lap goes off within 3 secs

    If the battery works in another laptop, it must be some kind of motherboard problem. I’m not sure what else could be causing that.

  131. 131
    Chandra Says:

    My Lenovo Thinkpad R61 shows a white screen after I switch the power on. All system lights (LEDs) are working fine. I cannot hear the hard disk or fan sounds though. I cannot see any image or message on the screen and hence i can’t proceed. Help please, if anything can be dome.

  132. 132
    Sajid waheed Says:

    i m facing problem 3 like Laptop turns on and off repeatedly.
    i acted your problem recommendation solution but no more.
    i tell you that some time my laptop runs in normal, as laptop show such like i have no problem but still in reality i have broblem

  133. 133
    cj2600 Says:

    @ Sajid waheed,
    If you tried replacing memory but the problem still there, most likely the motherboard failing.

  134. 134
    roushdy Says:

    i have problem in power supply section of motherboard compaq presario cq61-303as i traced the voltage input it is 19v when pluging— in turn the led iluminate &suddenly disappeared will you explain to me the test points in this area through the schematic diagram &the probable cause of this trouble which making no power on thank you for helping me in advance

  135. 135
    Jahangir sk Says:

    Thank you sir.

  136. 136
    prakash rudra Says:

    my lenovo laptop b560, was installed windows 8, after 2 days it tottaly black skin turn on to win8. please help me. How I turn to win 7? and how I turn on win8 truely.

  137. 137
    Siva Prasad Says:

    Hi..Prakash Rudra

    It it very common problem in every laptop which installed with windows 8. Windows updates may cause for this issue. Solution is “Remove the battery, disconnect adapter, press and hold power button for 50 seconds. Now don’t insert battery, connect with adapter and turn the laptop on. 100% your problem will solve.

  138. 138
    Matthew Says:

    Dell Inspiron 17R N7110
    Windows 7 Home Premium

    None of the desktop shortcuts functioned correctly, so I rebooted the machine. During reboot the machine would display the Dell logo and the progress bar. Once the progress bar would fill up it would then go to the Windows Boot Manager and ask me to choose an operating system (only one operating system is installed – Windows 7) it would then quickly start the reboot process over again. and loop like this until I hit any key (doesn’t matter which). After that it would load windows. once windows would fully load I still cannot select any of the shortcuts, or the start menu. until I hit the windows key on the keyboard to bring up the start menu. after that everything seems to start to respond better (at least on the surface). I then replaced the HDD and installed windows 7 Home Premium to that HDD. once loaded it did the exact same things. I then took out the battery on the motherboard waited a little bit and then put it back in. Once I reset the system date and time in the BIOS and save, windows would then start to act normal again, but after a few minutes it would resume with the same problems. I then got a new battery and placed it in the motherboard. still no change. I am all out of Ideas! any help would be great! The laptop also seems to work normal for about an hour if I power it down for at least a half day or longer.

  139. 139
    Joshua Says:

    Sound problem in my HP pavilion g6. Both external and Headphones sounds audio at the same time.tried making speakers as default and updated audio driver. Pls urgent help!!

  140. 140
    cj2600 Says:

    @ Joshua,
    To me this sounds like a problem with the audio driver. I’ve seen it happening on laptops with a wrong audio driver installed. Did you search for the correct audio driver on HP website?
    It’s possible you installed the latest audio driver available though Microsoft update but need the original driver from HP website.

  141. 141
    aqir Says:

    hi..my laptop produce constant sound when i turn it on…blank screen..then i need to press keypad for it to turn on properly.. already replace with new keypad but the problem still occur…FYI i’m using hp pavillion dv4 OS windows 7…please help me..

  142. 142
    Rebaz Says:

    hi my new dell inspiron R15 5521 is not shutdown correctly when I shutdown it, the screen is off but the bottom light is not off it is make my laptop power going to 0 and then my laptop is at start up is slow however about 4 times I format my laptop but it isn’t solve so can any one help me whats wrong with my laptop is there any hardware problem?

  143. 143
    cj2600 Says:

    @ Rebaz,

    hi my new dell inspiron R15 5521 is not shutdown correctly when I shutdown it, the screen is off but the bottom light is not off it is make my laptop power going to 0 and then my laptop is at start up is slow however about 4 times I format my laptop but it isn’t solve so can any one help me whats wrong with my laptop is there any hardware problem?

    Try running Dell hardware diagnostics.
    Turn on the laptop and press F12 when logo appears on the screen. Select diagnostics.
    Maybe you’ll see what is failing in results.

  144. 144
    mohsen Says:

    Hi.
    I have a Vostro 3350. I was configuring a ubnt nano5 wireless antenna and i plugged the POE output to the laptop LAN port. after some times i smelled something is burning and suddenly the port smoked. i unplugged it immediately.
    Ii tested the LAN port and it is working, but how i can make sure about the health of the laptop?

  145. 145
    cj2600 Says:

    @ mohsen,
    Probably just keep an eye on it while using. There is not much you can do unless you want to take it apart and take a closer look inside.

  146. 146
    biruk aweke Says:

    it is good explanation thanks.

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