What can you do if the laptop LCD screen turned completely white? From my experience I can tell that this problem may be related to the following:
1. Loose connection between the video cable and the LCD screen.
2. Defective LCD screen.
3. Defective motherboard (I assume the graphics card is integrated into the motherboard).

Laptop screen is white

Here’s an example of a laptop with white screen. When you turn on the laptop, it starts but the image on the screen is completely white right from the beginning. In my case it was a Toshiba Satellite M45 laptop but this problem may occur with any other brand.

Test laptop with external monitor

Most likely you still can use the laptop with an external monitor. Just connect the monitor to the VGA port on the back or side of your laptop and then switch the video output from internal to external mode.
On Toshiba laptops you can toggle between internal and external screens using Fn+F5 keys. Hold down Fn and press on F5 until you get video on the external monitor.
On IBM laptops use Fn+F7.
On HP laptops use Fn+F4.
It’s possible that you have to use a different key combination on your laptop but you get the idea.
On some laptops, in order to be able to use the external monitor, you have to connect it to the laptop and then restart the laptop so the external monitor is detected by the laptop.

Laptop video cable

I noticed that in some cases the laptop screen may turn white because of poor connection between the video cable and the LCD screen. If you want to check this connection, you’ll have to take apart the display panel because the connector is located on the back side of the LCD screen.
These laptop service manuals and disassembly instructions may be useful.

Reconnect video cable

I always check the video cable connection first. Reconnecting the video cable may fix your problem.
If reconnecting the video cable doesn’t help, most likely you have a problem either with the LCD screen or with the motherboard.

Disconnect LCD screen

The best way to find out witch one is causing the problem is testing the laptop with another working LCD screen. Without this test you’ll have to guess because as I mentioned before this could either bad motherboard or bad LCD screen.
You’ll have to disconnect the video cable from the LCD screen (connector 2) and the inverter board (connectors 3 and 1). After that you connect another working screen and test video.

Test laptop with another LCD screen

For this purpose I’m using one of my test LCD screens. My test screen is cracked and because of that you see a wide white band in the center but it still works fine for this test.
The original screen is white but my test screen works normal (except the crack of course) and I can see the image. After this test I can tell that the problem must be related to the screen.

White LCD screen

After I assembled everything back together and connected the original LCD, it’s still white.

CONCLUSION. In my case this problem is related to the LCD screen and it has to be replaced.

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  1. 328
    cj2600 Says:

    @ Mary,
    You can try connecting your laptop to a TV via HDMI cable. I’m not sure if your laptop detects an external monitor by default or not.
    On some laptops you can to switch from internal to external monitor only after Windows OS booted to the desktop.

    Can you hear Windows boot sound even though the screen is white?

  2. 327
    Mary Says:

    I have an HP Pavilion dv7 and my screen is completely white.. Can I test the screen by hooking my laptop up to the television?

  3. 326
    Shan Says:

    I’m having display issue with my HP G72 laptop. The screen was displaying lines and mostly white color. It is working ok when connected to an external monitor. After researching I have replaced both LCD and the cord that connects the display. Now I get complete white screen.

    Is this due to new bad display or bad mother board (it works on the external monitor) ?

    Thank you in advance!

  4. 325
    cj2600 Says:

    @ marcus,
    Apparently, the new LCD screen not fully compatible with your laptop model. Unfortunately, there is not much you can do.
    Either use is as is or replace the screen with a compatible one.

    Just in case, check out Lenovo power management software for your laptop (if available from their site).

  5. 324
    marcus Says:

    I replaced the cable and the LCD and now my lcd works on a lenovo g470. The issue i have with this aftrermarket screen is that the brightness functions only go to reallybnlow Or really bright. I have updated all drivers and the bios. I have updated my graphics card and its built into my motherboard. Any advice?

  6. 323
    cj2600 Says:

    @ Naresh,

    In you case I would try disconnecting the cable from the motherboard and only after that testing the laptop with an external monitor. If it works when the cable disconnected, probably it’s bad cable.

  7. 322
    Naresh Says:

    Thanks for the wonderful article !
    I have an HP G7 Laptop. It shows only white screen and it doesnt display anything on the external monitor.
    I have tried reconnecting the cables, but no luck.
    Also, because of broken hinges I can see that the wire to the LCD is cut a little, but even taping it, it displays only white screen.
    Does external monitor will work even if the cable that connects to the LCD is broken ?

  8. 321
    Bernard Says:

    Thanks man my problem Solved

  9. 320
    Adolfo Says:

    on my Toshiba Satellite Windows 7

    Hi, I had the same problem with a Toshiba Satellite laptop, I found the problem: Trojans.

    Heres is what I did:

    Start your laptop, and while it is booting press F2

    a boot menu options appears, select something with command prompt ( I do not remember exactly the words)

    Now a command prompt window will appear, just type: explorer.exe
    this will load windows in safe mode.

    Now download this little but powerfull program: Rkill from this site: http://www.bleepingcomputer.com/download/rkill/ (if you have another computer download it there, put it in a usb flash drive then run it in your afected laptop, this is what I did)

    After you run Rkill, download this antimalware program : Malwarebytes from this site: http://download.cnet.com/Malwa.....04572.html run it, select Quick scan, after the scan select the afected files and select remove. After this it will ask you to restart your computer.

    It worked for me!

    I hope this will work for you guys, please let me know

  10. 319
    cj2600 Says:

    @ Jaime,

    It’s hard to tell what is wrong. Could be failed LCD screen or motherboard failure. The only way to find out is testing the laptop with another working screen. If the problem still there, this is motherboard issue.
    You’ll have to gamble and buy a new screen.

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