Right, I'm on my a laptop now instead of an annoying iPhone or my Nokia 5800. I shall sum everything up.
On my 520W CoolerMaster PSU I cannot turn my PC on, the fans spin a few times and then the red light comes up on, which means a PSU Failure. Now, when I first got my PSU this happened but it seemed to fix itself.
I then put in my old PSU from my other PC (400W) and put in my old graphics card that doesn't need two 6-Pin connectors, now when I turn it on, the PC loads up but there is no PC Beep. When I put in my new graphics card and don't put in any 6-Pin connections (As my old PSU doesn't have them) the PC Beeps will happen.
I think I am going to have to send my PSU back, since I bought it from OcUK, do I have to send it back to them?