I have a GIGABYTE GA-MA770T-UD3P and Im trying to unlock the cores. I went into the bios and set the ACC in the bios to Hybird and set all cores to auto saved and rebooted but it will not load windows did i miss something?
I have a 550 that does the same thing. I have spend hours trying to make it stable but with no success. You can try and bump the NB voltage .1 bump cpu to 1.4vcore keeping the stock 3.1 and see if it helps or not. I think you have gotten a defective 955 though.
