Thx for modding it for me. I am running 2201 the shipping bios (which I think is not EFI). I just replaced my PSU a enermax 500w liberty which was a bit long in the tooth, I was unstable at stock. I have a Corsair hx850 installed now and at stock have not reset or hard locked.

I will have a go at overclocking with my current bios first. However I have read posts saying that bios 1406 (enhances compatability with yorkfield c1 cpu) is the best bios although he was running a2 rather than a3 chipset revision.

Would you think it likely that this previous bios could be better than latest for overclocking or was it just an old post?