Computer starts up but then shuts down immediately

DemBones79 · 02-23-2008, 11:22 PM

Just as a follow up:

Asus was unable to diagnose the board. After replacing the CPU and several other components, they issued an RMA # for me. Still waiting for the new board. If I were to guess at a cause for the issue, I would say it was bad capacitors on the board. Asus and I did agree that whatever the issue was, it was definitely power-related.

bbfuller · 02-24-2008, 04:28 AM

One extra thing that might be worth investigating if this happens to anyone again is something I came across recently.

There the machine shut down after a couple of seconds as well.

It turns out it was the revolution sensor on the CPU Fan that was not working even though the fan was spinning. Of course when the motherboard doesn't sense that that fan is turning it shuts down the system to avoid melting the processor.

A new fan solved the problem straight away.

brightwindow · 02-24-2008, 08:05 AM

I can just tell that's the problem of the power supply.

DemBones79 · 02-25-2008, 07:24 AM

Quote:

Originally Posted by brightwindow

I can just tell that's the problem of the power supply.

Ummm... No, actually. I unfortunately can not account for the brand new PSU that I just bought as the system still wouldn't boot, but the one that was originally in the case has since been put in another computer and is working quite well. It had been in use for almost two years prior to this incident, without fault.

As others have noted, a new PSU is not the answer to everyone's woes.