I wasn't doing anything out of the ordinary, merely playing a game on my computer, when snap, the screen goes black and looses signal and the computer starts rebooting. It seemed to start rebooting normally, but i regret to say i stopped paying attention to the computer, and 30ish seconds later i hear it completely power off. When i went to turn it back on, i got a flash of the blue case lights and all the fans twitched but it immediately powered off again. This now happens every time i try to turn it on. After getting the power flicker, i have to either unplug the computer or hold the power button for a few seconds in order for the computer to flicker again when pushing the power button. It's literally less than a tenth of a second worth of power before it shuts off, the fans just bounce back to thier same location. The green light on the mobo is always on while power is connected. I've unplugged the hard drive and both cd drives, reseated both ram sticks, unplugged and replugged all the power cords to the mobo (A8N SLI). Any ideas on what can cause this type of behavior is greatly appreciated.