I don't know that I would recommend playing with the voltage of the processor in the BIOS unless you know exactly what you are doing. It's quite possible to fry your processor if you turn the voltage up too high.
What I would recommend is to restore the factory or failsafe defaults for your BIOS and try to boot again.
I think first I'd try to do a reinstall of windows, just to make sure that nothing went wrong during installation.
Next, have you thought about trying to boot to a live version of linux to see if it's possible for you to boot anything?
Let me know if that works...and if not, I'll think of something else