Avelino Tavares wrote:
I have a pc when i shutdown, he do this, but imediatly power on
automatically.
I had change de power supply, change memory, verify cables but my problem
persist.
I read cpu fan rpm, mobo temperature, etc.. All ok!

What can i do ?

Thanks.

Board MSI-P965 Neo-f
Intel Core 2 E2180


Check the power supply output voltages. Particularly pin #16 power
on. This pin should be high, 2.0 volts. If it's low then the
motherboard is the culprit.
http://pinouts.ru/Power/btx_mbpower_pinout.shtml