My computer randomly* shuts down. I pretty sure its my PS. The reason I think its my PS is when I plug something into an electrical circuit it shuts down. Now I get random shut downs. It always happens when I am sitting idle. I can play BF42, UT2K3, or Unreal II for hours and it doesn't shutdown. When I sit idle it can shut down 2-3 times in a 5 minute period. Sometimes it shutdowns restarts and once I make it to my desktop it shuts down again. Nothing is showing up in Events. I have ran memory benchmarks thinking it might be my memory and CPU benchmarks using Sis Softsandra. I can complete the test without problems. It happens in default settings also.