Never had one do this before. It simply shut off and will not come back on. Wasn't running a video or any games. Actually I was working. Had to pull out my desktop backup to get back online. Not a happy camper. The lights on the board and video card still light up. I did pull the power cord and tried again and still nothing. Not even a brief spinup of the fans. I'm assuming try a different power supply first? My stats are in my sig.