its different for every processor. try going up in steps. booting to windows and performing a pcmark test to strain the cpu. if the benchmark runs to the end and doesnt crash then restart and clock up a higher notch. repeat until the system crashes in the pcmark and then clock down a notch.
it happened to me when i oc'd my athlon. it happened during processor intensive tasks like defrag and pcmark. thats when i downclocked it to be stable. but dont push a amd cos it'll just blow up in your face.
This thread is now locked and can not be replied to.