well since sept my computer has been shutting down on its own whenever the windows desktop shows up after 5 min or when ever the windows xp loading screen appears. I thought it was a virus but i did not get any warnings about the computer shutting down. and just now after not touching my comp for a few weeks I try to turn it on and poof goes the PSU........i guess a learned a valuable lesson don't use cheap no name PSU's that come with towers