you could try this....
one: go in to bios, hit del at start-up till you get to a blue-grey screen before windows.
two: go to the adavanced tab, then go in to cpu config and disable cool and quite and everything there on that tab.(c1e,c6 state, apm)
three: press esc and go down one to northbridge,go in there and theres one thing to go in to , there you will see ECC enabled, disable that.( happens on asus mobo's)
now for the overclock......
four: got to the ai tuner tab of bios and change it to manual from auto.
five: got to cpu ratio and change to 20 x
six: disable turbo core
seven: go to ref clock and change to 200
eight: change your ram to the right speed, 1600mhz or what ever
nine: go to cpu load line config and change to high.
ten: go to cpu voltage change to manual and change that to 1.29v
now got to that last tab in bios save and exit.
you should now boot at 4ghz and be near stable under full load.
need to test your cpu load line config with a heavy load , like prime ,hyper pi or something, watch your voltage and give it a little blip of prime, what voltage do you get under full load, move you load line up or down for incresses or decresses to voltage and make it level under full load
EDIT;this is my copy and paste advice for fx.
4ghz may seem slow, but if this cpu could make a 4.2ghz within the recommended voltage it would be an 8150 instead.
Edited by MrPerforations - 11/8/12 at 8:04am