I've posted this in the CPU forum but I'm really not sure if that's the problem. So at the moment, and for quite some time my PC has been sporadic when I click the power button. Sometimes it will turn on and boot into Windows just fine, other times after clicking the power button the fans will start to spin for a few seconds (nothing will come on screen) and then it will turn off, then they will start spinning again, turn off again, etc in a cycle. This only seems to be from a cold boot and not from restarting the PC. Admittedly I'm overclocked, but the OC is stable and will run Prime95 till the cows come home.
When this first started I thought it was the PSU because I was using a relatively old OCZ 1010w PSU, but after switching to an Antec HCP 1000 Platinum which is brand new I doubt that's the problem.