It has been my experience that if you want to avoid corrupting your hard drive when overclocking,overclock the processor first,then install your os.if windows has an issue,it won't let you install as you'll get the blue screen of death(BSOD).Otherwise your machine should run just fine once you have installed the os.Just a recommendation,that's how i fixed the issues i had.well most of them anyways.I did have to replace a 512 stick of CORSAIR EXTREME OC memory on one occasion.My fault really,I BOUGHT USED.lol.Don't mind me,I've just had bad luck buying second hand hardware,including 3 amd processors.My early years of building comps.Learned a lot since.this forum being of good help the last two years.(that's how long it took me to hear about this place)lol.Anyways,try as i've suggested,it may work for you.Goodluck.
Dahak
AMD X2-4400+@2.4 S-939
EVGA NF4 SLI MB
2X7800GT IN SLI
2X1GIG DDR IN DC MODE
WD300GIG HD
EXTREME 19IN.MONITOR 1280X1024
ACE 520WATT PSU