I've got a Soyo P4 Fire Dragon mobo with DDR266 Ram. I know I've got all the power connector wires on right, the power to the mobo is securely plugged in, etc. The heatsink and cpu were properly mounted/seated. The thing powers on for about 2 seconds and then shuts down on it's own. I've exhausted what I know how to troubleshoot. Anyone have any suggestions what else to look for?