I would say to keep them on the voltages. For the cause I would say a PSU or mobo ( That's a guess). Also sounds like you might have semi fried the cpu if it's needing more voltage to operate at normal clocks.
Reset the BIOS by taking out the CMOS battery and try again?
Have done that a few times but makes no difference.
Just reinstalled everything about an hour ago, applied new thermal paste, removed mono to ensure pushpins were definately in correctly. reconnected all cables, checked motherboard manula for correct front panel connection setup.
System booted into BIOS no problem, set loaded optimized defaults but still wouldn't load windows on Auto voltage.
Only stable @ 1.4375v with Northbridge @ 1.55v everything else is on auto.
Am looking on ebay for a cheap motherboard to test on. any recomendations?