I have encountered a problem....first a little info I have K7S5A and 2000+ xp with 512 sdram133 320w power supply running winxp...now my problem is that when I go to bios and set cpu and mem frequency to 133/133 my pc restarts randomly when I am on it......but when I switch frequency to 100/100 then it is stable....problem is that my cpu is only running at 1250 and not 2000+ any help here would be greatly appreciated as I am becoming very frustarated..