My 2500k doesn't want to go past 4.6 on any voltage. It starts up Windows but always freezes a few seconds after the Windows icon animation starts. I'm stable just under 1.3v at 4.6ghz. I know some CPUs simply don't like to cooperate with higher clocks no matter the voltage, but are there any tricks I could try in the BIOS just to see if I can get it higher?