Can't Get System to Power Up - Help!


Feb 1, 2007
I have a P4 2.2 with an ASUS P4PE-X motherboard, ATI Radeon 7000 video card and 512MB PC-2700 memory. The unit will not power up, but the green power light on the board comes on.

The machine is about 2 years old. We recently had a power outage that knocked it out. I tested the power switch, it's OK. I put a new power supply in and no luck. I then purchased the exact same motherboard put it in and it worked.

I proceeded to re-format the hard drive as I wanted to do a clean install on this machine. I left it overnight, it was about 1/2 way through when I left. When I came back in the morning the machine was off again and back to the state it was with the old motherboard. Only the green power light on the board will come on.

Any ideas? I am baffled. Could another component be damaged causing damage to the board? :?