I have the MSI P6N-SLI FI 650i mobo, but the highest i can get the fsb to boot at is 1500. If I set it 1501, nothing happens, no matter what I do to the vcore or fsb voltage, etc. Any help?
What modification to voltages and memory timmings have you made so far?
Basic overclocking would indicate that you slowly increase voltages and loosen timmings when you can no longer boot/POST..
So thats a starting Place.
For more help Take a look at this Guide. Core 2 Duo Overclocking Guide - OverclockersClub Forums
A Screen shot of Everest overclock page or CPU Z Would help.