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Anyone know why I Fail POST?

Last response: in Motherboards
March 5, 2013 3:05:05 PM

So I have an Asus p9z68-v pro Motherboard with a 2600K.

I set my system up and installed windows, everything fine. Then, i decided to overclock to 4.5GHz.
Everything still, fine. Ran P95 for 6 Hrs, with temps never exceeding 65 degs.

However, sometimes (not all the time) when cold booting, my PC does not post. It then restarts, and always posts fine.

I thought my OC could be unstable, so reduced to stock speed again, but the problem still persists.
Friends have told me it is a voltage problem, with the CPU not having enough voltage to boot from cold, but is this correct and do you guys have any advice?

NB, my PSU is plentiful-850W (to be on the safe side.)

Many Thanks,


More about : fail post

a b V Motherboard
March 5, 2013 3:38:44 PM

Set the voltage to auto?
March 5, 2013 4:04:26 PM

Hi spat,
Thanks for the quick reply.

It is was on auto initially, but the problem still happened. Even with voltage you would use for overclocking (1.3 +), same story.