You need to reset the Bios. Anytime I have oc/'d a chip and it crashed after the cmos is booted it is due to the bios applying the o/c setting that you configured. Pull the cmos jumper on the mobo and aplpy defualt setting in the bios, then try a reboot. Sometimes you need to mess with the jumper and restart the comp a few times for it to kick in.
Your cmop wouldnt have started if you damaged the cpu. At least I dont think it would. You could have messed up a circuit route on the chip itself causing it to permanently malfunction.
Hey I guess that what you get when you have a 1.2 Duron Anyway, tell moms give you some spending money an get a real chip already. The stone age is over.... Just a joke-- SMILE...