ko888 :
If the PCI-E cables aren't distributed across the two +12V rails properly or the OCP setpoint is too tight then you will get the problems that you're having.
That HKC V-Power 650W is very inefficient (~75%). Inefficient will mean that a lot of heat will be generated and that will accelerate the loss of capacity as temperature rises (i.e. derating) and as the aluminum electrolytic capacitors' electrolyte evaporates (i.e. will cause electrical noise and ripple levels to rise possibly outside of allowable ATX specs).
Haha I pretty much didn't understand anything but yes, I am getting a weird buzzing noise when im playing. So can you give me instructions on how I can fix this? Or is a new PSU the only way to solve the problem...