It's strange but true. Ok, this is really weird. My computer turns itself off after about 15-30 minutes. No warning, no "Windows is now shutting down"... just blink... gone. I checked my power saving features, and it was set to "turn the hard drive off after 25 minutes." I figured... this must be it... I switched it to "never"... 10 minutes later... blink... off. I can get into safe mode and tool around... and it seems to stay on in there, so I don't think it's a question of overheating as my girlfriend suggested... plus it would take longer than a half hour to overheat. Ideas?