yo gmccall, just wanted to let you know that I was doing multiplier only overclocking and my hard drive definitely got jacked up. When I upped my duron 650 to 800 it wouldn't boot at all anymore and the LEDs told me there was a memory problem. After I jumpered the bios back to it's original settings and tried to boot, it would say failure loading windows and turn off my machine, when reinstalling windows I noticed that my windows folder along with a couple of other ones had somehow been messed up and weren't valid files but couldn't be erased either. When reinstalling windows, it had to reinstall it in the Windows.000 folder because it couldn't overwrite the corrupted file. Needless to say, I spent the next 4 hours formatting and partitioning my hard drive. Luckily this was only 1 day after I built my machine so I didn't lose too much(besides time and my sanity). I don't know what happened and I'm kindof worried to try again. I didn't think overclocking the multiplier could do that much harm, but I guess it can under the right circumstances.