|I just built this computer and it ran fine for a few days. |
i5 quad-core 3.3GHz
Gigabyte MB Z68X-UD3H-B3
NVIDIA GE 240
650 watt Antec PSU
I didn't change my usage habits much at all, but the yesterday night it just shut off like someone pulled the plug.
I tried to turn it on again and it ran for 15 seconds and shut off. A few more times of that and it quit doing anything at all for awhile.
I went out and bought a new psu and when I came back it started up and ran for another 20 mins no problem, before I installed the new PSU. Then the same thing. It shut itself off like pulling the plug and then would only run for 15 seconds.
So I took out the old PSU and put in the new one. It ran for 20 minutes and then... same thing.
I guess that means its not the PSU. It must be the MB? But what could have gone wrong? Just a faulty board?
Any ideas of what to do? I'd perfer not to have to rebuild the thing...
Thanks in advance.
EDIT: I forgot to mention that trying to key into BIOS does nothing to stop the shutdown. It will shutdown anyway.
I also tried pulling the powerswitch lead after startup but that did nothing.
Also, any USB devices that were plugged in before the shutdown remain on while the rest of the computer is off. ???