Currently, my mobo is on 266 Mhz strap, fsb 1700 Mhz, and memory freq is 531 . It will POST and boot to Windows. Ok now if I want to try out the next strap which is 333 Mhz pc will not POST at all. Pretty much blank screen and I'm forced to reset CMOS. Just want to know why it don't POST on that strap. Do I have to increase voltage somewhere like the NB or FSB termination?