That sounds familiar.
Disconnect your PSU from the motherboard, drives, etc ,etc, but leave a case cooling fan attached to the PSU. Take a piece of wire or paper clip and connect it to the green wire in the 20 or 24-pin motherboard connector.
Take the other end of the wire or paper clip and connect it to one of the black wires on the 20 or 24-pin motherboard connector. Plug the power supply into the wall out. If the case fan starts spinning, the PSU is good but the motherboard went out. If the case fan doesn't spin then the PSU is bad.
I remember awhile back I had the same problem with a Pentium 3 system. The problem wasn't the PSU. One of the compacitors on the motherboard exploded. I just dropped the board in the trash and bought a Socket A and used the same PSU which is still working as of today.
I'm having the same problem, and have narrowed it down to the motherboard. I had already tried 3 PSUs, so I was pretty confident that wasn't the problem. However, I tried the paperclip thing and it worked fine. First time I heard my computer make any sound at all since it failed! So I assume something on the mobo is not responding to the power button press. I didn't see any obvious problem (like an exploded capacitor). Am I correct in assuming that if something went wrong with the CPU I would still get some indication of life at power-on?
September 4, 2008 12:18:21 AM
i beleave that u werent getting enough power to all your components try a 600 wat psu but then i could be wrong and cost u money outa your pocket srry mate i had sanme problem with my system ad still isnt fixed yet