Originally Posted by c14m0r3
650 WATT Chiefmax ATX Switching Power Supply
Go buy something that doesn't cost $20. Power supplies absolutely must be name brand, or you get... well, this kind of problem for one thing.
Even if you spent more money on the power supply, that particular model is plumb with issues just like yours, unfortunately.
Corsair, Seasonic, Antec or even Thermaltake would be better. From the looks of your system, even a 430 or 500 watt from one of these guys would be just fine.