after some months, when i try luck to turn on the laptop, suddenly the laptop turn on. Everything going as normal. The system is okay. But few days later until now, my laptop is doing the same problem. It cannot turn on. Please help me to solve this.

If the laptop starts intermittently like that, it could be one of the following:
1. Failed memory module.
2. Bad connection between the memory module and motherboard.
3. Failed motherboard.

Try reseating both memory modules. Test the laptop with each memory module separately.

I have a hp dv6913rs i shut it down went to start it a week later and it will come up to a hp screen and it has f key does this on the bottom of the screen have tried all of them done the hard reset sum time it will let me in the bois other time

Try removing memory modules and test the laptop with each module separately. It’s possible that one of the modules is going bad. Just a guess.

it will get line on the screen hp things its the mother board is there a test for this please

Just one line or many vertical lines? If you get multiple vertical lines running though HP logo, this could be motherboard failure.

Compaq cq60 215 dx
Fell and won’t stay on seems fan is not working.
Screen turns on but windows won’t load.I’m able to
F9 to phenoixBios but can’t load windows vista.

It’s possible the hard drive was damaged.
I would test the hard drive first.

I HAVE A HP DV9000
ONE DAY I POWERED ON AND SUDDENLY GOT OFF.
NOW THERE IS NO POWER LED, NO QUICKPLAY LEDS NOTHING
JUST WHEN CONNECTING THE JACK OF AC I SAW THE CIRCLE LED AROUND THE JACK
BUT THE LAPTOP DOESNT MAKE ANY SOUND ANY LIGHT, NOTHING

WHAT COULD BE THE SOLUTION??
PLEASE HELP

THNKS

my laptop screen become white whenever i try to on it.
some tome it on properly but if some one touch it then it also become white .

This could be bad connection between the video cable and LCD screen.
Sometimes reconnecting the video cable on the back of the screen fixes the problem.
Check out this guide.
http://www.laptoprepair101.com.....ned-white/

I have an HP Pavillion dv6835nr entertainment center laptop and the jack is loose. HP told me it was the adapter and i paid for a new adapter and still have the same issue. HP disregarded my telling them the jack feels loose and talked me into buying the adapter however I am having the same issues. Please tell me how to fix this without having to send HP my laptop because I am to the point of not trusting them anymore after the waste of money on the second adapter.

The power jack is soldered to the motherboard.
It’s necessary to disassemble the laptop, remove the motherboard and replace the DC jack with a new one.
I explained how to replaced laptop jacks in this post:
http://www.laptoprepair101.com.....air-guide/
It’s not easy and requires some soldering skills.
If you don’t know how to solder, I would suggest taking your laptop to a local repair shop.
If you send your laptop to HP, they will replace the whole motherboard and charge you tons of money.