Recently I decided to upgrade an older Dell computer by adding some ram and a new video card. I upgraded from 2x1gb to 2x2gb and from a 8800gtx to a gtx 460. the computer loaded up fine with the video card, but for some reason took a few tries with the ram. I had to install one stick at a time before it would load windows.
Now, when installing a program or playing a game, it will randomly restart. No BSOD or error messages. it also doesnt restart if idle (although its only been idle for a limited time). I formated the drive, installed windows 7 64bit (originally windows xp) and still notice the random restarts. Is the memory the culprit? its a dell so i cant tweak voltages.. if the new memory isnt being supplied enough power. or the video card?
or is this something pre-exisitng?
Prior to the hardware upgrades, the computer would occasionally be found in a sort of sleep mode.. the fans were spinning but it would never wake up. it required the power button to be held down. could this have evolved into the random reboots?