Ive just started to overclock my system and have hit a wall, i can get my P4 upto 3.6gig from 3.2 but i try to go any higher and it wont get past bios. It just displays a cursor at the top of the screen with no other writing and i cant get into bios untill i clear it. i think it might be because i havnt uped any voltages, so this is what i need help with. In the bios screen, one of the options is voltage and frequency control, i can change the frequency but there are no options for voltage. my house mate has just receved a new mobo which requires certain keys to be pressed to see the overclocking options, i was wondering if the voltage controls (if they exist) could be hidden in the same way. Any sugestions are welcome exept buy a new mobo as i cant afford it 