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Windows 7: Laptop Display black, but I see backlight


02 Sep 2013   #1
RunOrDie

Windows 7 Ultimate x64
 
 
Laptop Display black, but I see backlight

Hello everyone,

My laptop display is always black, but I can see the backlight is on.

My laptop is connected to an external monitor and when I click on Screen Resolution, I see that my monitor's name and my laptop monitor's name, but it's name is now different.

My laptop Display was always called "Vaio". It had max resolution of 1600 x 900.

Now, my Display is called "Digital Flat Panel (1024x768 60hz)" that is totally different than my display...any help?


My System SpecsSystem Spec
02 Sep 2013   #2
gregrocker
Microsoft MVP

 

Update the Display adapter driver in Device Manager.

First run all Important and Optional Updates to completion to see if its offered, or another performance update is needed.

Rightclick on the monitor display to see how it is configured, try another. What happens when you choose only the laptop display, or unplug the monitor?

If these fail can you System Restore to before the problem began?

If not then weŽll try to think of other solutions before looking at the screen wiring harness connection.
My System SpecsSystem Spec
02 Sep 2013   #3
RunOrDie

Windows 7 Ultimate x64
 
 

When I unplug my monitor or only choose laptop display, my screen is also black, but I can see the backlight.

Also, I always connected my laptop to my monitor via HDMI. But, I switched to AVI and this started happening.

From my other problem I did use my System Image to restore and that solved my other problem. But this problem occured.
My System SpecsSystem Spec
02 Sep 2013   #4
RunOrDie

Windows 7 Ultimate x64
 
 

Updating drivers did not help , I already had the most updated ones.
My System SpecsSystem Spec
03 Sep 2013   #5
gregrocker
Microsoft MVP

 

There were other steps to try.

What happens if you connect using HDMI now?
My System SpecsSystem Spec
03 Sep 2013   #6
RunOrDie

Windows 7 Ultimate x64
 
 

Same situation, Drive Manager lists as Display Flat Panel (1024x768) and thus, it won't't let me use my laptop screen.

Everytime I turn my laptop on, I get a very brief backlight flash and then I see the display on my monitor. Before, I can see the Vaio splash page and then the Windows screen...

Should I open the screen area and check if my wire may have come lose?
My System SpecsSystem Spec
03 Sep 2013   #7
gregrocker
Microsoft MVP

 

That's the next step after you assure it isn't Display driver or bad setting. Did you look at settings in BIOS that might pertain?

Often there will be a video found by Googling your model for how to replace screen, disassemble, etc. You only want to disassemble enough to check the wiring harness for display.
My System SpecsSystem Spec
03 Sep 2013   #8
RunOrDie

Windows 7 Ultimate x64
 
 

What settings should I look for though the BIOS? I did reset the BIOS to factory settings when trying to solve my other problem.

Ok I will check the LVDS wire connected to my screen. And I will test for another screen. (I have 2)
My System SpecsSystem Spec
03 Sep 2013   #9
gregrocker
Microsoft MVP

 

Any settings pertaining to display. Post back pics if indoubt.
My System SpecsSystem Spec
03 Sep 2013   #10
YoYo155

Windows 7 Home Premium x64
 
 

Did the PC undergo some sort of shock or fall recently?
What changed since the last time you were able to use the display?
Is it getting very hot?
Is it in a humid environment?
My System SpecsSystem Spec
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 Laptop Display black, but I see backlight




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