This morning it works just fine, I came home just now and this happens:
I push the case power button, the system starts to come on. 2 seconds later it shuts off. I touch nothing. 5 seconds later it starts to come on again. 2 seconds later it shuts off. A very rythmic cyclic which i didnt let continue for more that 10 seconds, before i hit the power switch on my PSU. 1 second later it turns on, for 1 second then turns off and stays off.
All system power draws from a UPS, which is at full charge, so its not an issue of power in (unless the UPS isn't outputing power, but my monitors and ps3 work just fine). Is my PSU just dead? Why now and not this morning? Please help!
PSU: corsair cs650m, bought about 3.5 years ago and used in the same system for all that time
UPS: CyberPower CP1000AVRLCD
Have you tried plugging the system directly to the wall, bypassing the UPS?