780 classy overclock doesn't stick

Hellu, i have a problem with precision x16, my overclock doesn't stay on after start-up enen though i've pressed "start with os" and "apply overclock at start-up" or whatever it says, i've tried reintalling but that doesn't work either.

Anyone know a fix? 

I've had problems with the new precision it was actually making my system randomly reboot for no reason I would use afterburner from msi.