My computer is giving me headaches for almost half a year now, the problem i'm having is that it reboots by itself. Some days it does not reboot at all but others it reboots three or four times a day. These happens no matter which program i'm using or if the computer is idle but i can't play games nor use programs like Google Earth because it reboots as soon as it opens.
At first i thought it could be due to a defective memory module, so i ran a test with memtest86 but i didn't get any errors after running it for an hour.
Then i thought on testing the video card, so i uninstalled the nvidia drivers and used my computer with the Windows XP compatible VGA driver, which i guess uses software rendering. This time i didn't get any reboots even with games and also Google Earth worked fine!.
So, the problem could be the graphics card or a combination of graphics card and memory module?.
Any help would be greatly appreciated.