I have issues with a media server installed in a desktop tower. It's a socket 775 machine running a 631 Cedar Hills 3.0 Ghz processor. There is 1 Gb or ram installed on an ASUS P5ND2-SLI motherboard. There are 3, 320 Gb SATA II drives configured in Raid 1. My problem involves my computer randomly shutting down. The computer runs the POST and i get 1 beep for Ok, then suddenly it shuts down. When I set the computer on its side it would boot into Windows MCE, and as soon as I tilted it, instant shutdown. I switched out the power supply and I received the same results. I unplugged all the hardware: hard drives, optical drives, leaving just the processor, motherboard, and ram. The computer will still pass the POST then shut off. Am I a victim of a faulty motherboard or is my processor a likely villain.