My Rig and OCing

[AndroidPeru]

Hi guys, just looking for basics on OCing. Well everytime i OC my cpu to a higher mhz i cant boot windows it just kindda goes in but then it boots back... well is that a windows bug or do i have to reinstall windows. another problem is that i got two hard drives and when i OC it only reads one is there a way to fix that problem and yes i updated my BIOS to current version and is doing the same thing please help me out........................ thanks