I currently run Win XP pro. As far as i am concerned other than win 95 it is the most stable os by "windows." Anyway for some reason i can't quite figure out why my computer wants to restart by itself for no appearant reason. I'd be in the middle of doing something when it would shut down. I can't think of any reason of why it would do that. I've scanned for virus' and did your basic utilities such as scandisk and diskdefrag. those are the only programs i have for fixing problems. Any help would be great.