Hi, for some reason i have a user his computer restarts automatically once in a while using his application or not doing at all just moving his mouse curser around. It doesn't BLUE SCREEN but it just restarts itself. Today what i have done is uncheck under STARTUP and RECOVERY- System Failure- Automatically restart. Any other ideas to trouble shoot this problem? I didn't see any errors in the Event Log at ALL. This is a HP XW6400 Workstation- Intel CPU, 5140 @ 2.33GHz, 2 GIGs of RAM. Windows XP. I switched the users power cord and switch him from the power supply he was on as well. Any ideas????