BSOD nvlddmkm.sys

http_//img8_imageshack_us/img8/220/errorce_jpg

First time the problem occured I was playing LoL - the screen went blank.
Then the message on screen appeared indicating no device is connected to it.
Then PC reboots itself with graphic distortion on boot screen and green stripes on Windows 7 loading screen.

then I get the above blue screen.

I fixed the problem once by running safe mode (otherwise impossible to boot) and reinstalling newest nvidia drivers.

after some time however exactly same thing happens so I am wondering is it a hardware graphic card issue ?

Spec
Core2Duo E8400 3.0 ghz
Asus P5Q
Gigabyte 9800 GTX 512MB
Windows 7 Pro x64
 
By the fact that you can run in Safe Mode indicates the issue is drivers. Try doing the following...

1. Download Driver Sweeper free version to your desktop screen and install.

2. Download the latest diver(s) for your video card but don't install them.

3. Uninstall your video card drivers and reboot your PC into Safe Mode. Run Driver Sweeper but ONLY for the video card drivers. I had someone use it on their chipset drivers! If it doesn't find any video card drivers that is quite okay; just leave all other drivers alone.

4. Reboot and install new video card drivers.
 
thanks, i guess I'll try to format entire partition then, don't have any significant data anyway and it's been a while since I have done that.

if that doesn't help guess it's hardware issue.
 
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