I wasn't really overclocking either when the first set of strange behavior happened, so I went into the bios and began playing with things, when I beefed the front side bus all the way up is when I got the same behavior you described. I actually originally had the fsb set for what the machine was supposed to be able to handle.... Your boards behavior just seems similar to what was happening with mine. Everything lights up but nothing happens... Heres an article explaining the issues, it does mention abit boards with the nforce chipset...