hello,
set your ai tweeker to manual and set your ram speed and timing manually.
if you have updated your bios to the newest,check the advanced setting/ northbridge tab as i found my bios had ECC enabled for some reason.
i think thats all.
if your going to overclock it,then.....
you need to turn of cool and quite,c1e,c6 state,apm ,its everything on the advanced setting/cpu setting tab,you then should turn off your turbo core as its locked to set speeds and you cant overclock it and it throttles your cpu to 2800mhz.
if you want to use cool and quite,you will have to auto volt to get a reduced voltage.iam doing this myself,but i have set my cpu load line to ultra high as that give me the same voltage as the auto dose,in my case 1.34v @ 4ghz and 1.34v under full load.