Hello. i have unlocked the shaders on my asus card as seen above. (not a reference card!) I can now overclock my card to the following(using smartdoctor and amd overdrive): Settings: vcore: 1,275 clock: 950 mem: 5400 Overdrive power control: +20 When im trying to make these settings work with bios changes i set the following: vcore: 1,2 clock: 900 mem: 1350 (x4) Overdrive: OFF Result: System wont boot. (BSOD at windows boot) Second try: vcore: 1,1 clock: 880 mem: 1250 (x4) Overdrive: OFF Result: System wont boot. (BSOD at windows boot) As a result i had to reinstall windows on another disk that did NOT have AMD drivers installed to recover the original bios again. (if i install the amd drivers the system crashes again!) Do any of you have advice on how i can mod the bios to a functioning overclock level that WILL boot ?