System shuts down after a few seconds

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October 8th, 2009, 06:46 PM

grindy

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System shuts down after a few seconds

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.

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October 9th, 2009, 07:35 AM

Dngrsone

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Likely the motherboard itself, not the processor, is to blame.

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Enable BSOD: Control Panel/Systems, Advanced Tab, hit the Settings button under Startup and Recovery, and under the System Failure area, uncheck the Automatically Restart checkbox.

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