It maybe the PSU, however it may be the motherboard or connections.
Check all your power connectors, if, you are using a modular PSU then check those, too.
What bios are you on... I believe 3703
is the latest try flashing to the newest.
There, also, maybe an option in the bios to turn that monitor off, if you wish to.
You really need to test the PSU or, at least try some software to see what the min and max voltages are.
, or equiv. may give you some insight to what is happening; they are not as good as a meter or tester, but it is something.
Originally Posted by OneMoar
I would check you're current psu with a quality multimeter to see if its actually spiking or if its just a sensor glitch
just trying to save you a few bucks
Actually, good idea. Drunk or not.
EDIT: I would not advise testing the PSU while drunk!