in my opinion, that sounds like one of your hardware devices, is either being overworked...(so like...are you overclocking? try stopping that and see what changes).... Another big problem I see a lot nowadays, is bad RAM. That can DEFINITELY cause your comptuer to crash. It could even be your harddrive; a bad harddrive easily causes system instability (no brainer :-P ). The blue screen that flashes, is most likely telling you an error such as "Kernal stack inpage error"...I BELIEVE this means basically...bad hard drive. However, there was an error before that I got that I deduced to bad RAM. I changed the RAM out and it worked fine. There's a million different things it COULD be though...