Hi, My second system is a P4 desktop. It was working fine, no symptoms of any problems - then yesturday it would start briefly and then completly shut down after about 5 seconds. No POST beeps at all, just shuts itself down. Here's what I've done: Switched the PSU with a known good one, same problem. Removed video card and all RAM, unpluged power from all drives - same problem. Is there anything besides an overheating CPU that can cause this? Both fans spinup at startup without problem. All ideas welcome.
hi, remove the power switch from the motherboards control panel and then short the two power switch pins with a flathead screw driver. Also check for any shorts, make sure the motherboard isn't touchin the back of the case and make sure cpu, ram, graphics card and any other cards are seated correctly.
