I have Toshiba Qosmio g30(no serious probs since purchase) that suddenly developed the green screen problem.The xp start up screen is green & black/dark gray pixels are also green. There is also some red pixel distortion in scroll bars and menu boxes.
I was using it fine today then i half closed the screen and left it to go on standby or hibernate. Anyway, when i flicked mouse to turn it back on, the green pixels were all over the desktop. PLEASE bear with me on my steps because i really don’t think it is a fatal hardware fault and don’t want to dismantle yet!
1)I thought video card driver corruption – installed new & original drivers but no joy. also tried other various tosh drivers for other parts.
2)problem the same in safe mode so started to get worried.
3)then approached the color management profiles thinking they had been corrupted somehow – short term fix but not happy. basically you can alter the settings to get rid of most black pixels…eg they will be v dark grey. the less there are the less the problem is visible. maybe there’s a prob deep inside windows, startup progs or registry that messes with pixel display/pixel shader? sadly i don’t think it’s that simple.
4)i can safely rule out water damage and have not dropped or bashed it.
5)I then suspected a damaged wire in the hinge mechanism but since i can have perfect blue (without even a single green pixel)i just doubt that any potential damage caused in the hinge would affect only black pixels…..and also only black pixels on all your pcs/laptops! playing around with hinge angle so far fails to solve problem but i haven’t entirely ruled it out since the last thing i did before it all happened was move the screen.
6)The static theory is certainly interesting but how would it have suffered such a problem? can heat / power supply or even sudden hinge movement cause this? Anyway, have tried touching inner frame/depress start fix but no joy yet. will experiment further with this but why would it only mess with the black/grey pixels and not green pixels instead?
7)I will soon try external monitor that should narrow down problem a bit more
8)in the meantime i am going into bios and will try a few other things…some rest for my laptop, a test of black pixels in photoshop etc, and some more static shck therapy!
ANY HELP would be greatly appreciated but surely we can’t all have the same faulty wires…it’s just such a specific problem.
QS remains is it software (windows, color management, drivers, registry, hibernate/standby/start up prob etc), or hardware ( lcd – graphics card communication, static charge, cable damage)
If these pixels appear on the screen as soon as you turn on the laptop, even before Windows starts loading, most likely your problem is not software related and there is something wrong with hardware.
First of all, you should test the laptop with an external monitor.
If the external video is fine and these green pixels appear only on the internal LCD screen, most likely you have a problem with the screen. You can buy a new replacement screen on ebay.
If both external and internal images have the same defect, you might have a problem with the video card. Unfortunately, I believe the video card is integrated into the system board and when it fails, you have to replace the whole motherboard.
As I mentioned above, before you make any conclusions, test the laptop with an external monitor.
UPDATE. September 30, 2008.
Based on our Investigation, some Toshiba portable computers have Graphic Processing Units (GPU’s) that may exhibit one or more of the symptoms specified below.
If you experience a failure, you may see one or more of the following symptoms:
- Multiple images
- Random characters on the screen
- Lines on the screen
- No video with power on
Consistent with our commitment to customer satisfaction, Toshiba is conducting a free GPU Repair Program for customers whose portable computers contain the subject GPUs in the model identified below and have experienced a GPU performance issue.
For more information please contact Toshiba Support at 1-800-457-7777 or a Toshiba Authorized Service Partner near you.