Originally Posted by muselmane
to me it really seems as if its a UEFI thing and has nothing to do with a production flaw or that its a bad OCer. Although there is only one Bios version of this board, to me it seems as if there is one that is buggy, and one that is not.
It could be UEFI. It could also be factory quality control.
I sadly sent back my Extreme 4 Gen 3 a week ago due to the quirks I had. I think the Gen 3 line has a chance to be great, but I made a mistake in purchasing a board immediately after release, IMO, and then got nowhere with Asrock support in trying to troubleshoot my issues; they gave up without trying and told me to return the board. One can hope that in six months it will be a solid board --of course, we may see X79, Z77, and Ivy Bridge by then.
I think people who buy an Asrock Gen3 board, only stick a graphics card on it, and don't try anything unusual with it are likely to sing its praises, because I think they work well if you don't do anything exotic. My issues came from expecting to actually use the onboard floppy controller (worked fine at POST, but never in Windows) and a PCIe card used by a modest number of people (Hauppauge HVR-1800 DVR card).
I'm not sure what to say about your issue, because my Extreme 4 overclocked fine to the limits of my limited i-2500 processor. However, I would make your RMA decision (if you choose to do so) within the time the reseller allows you; I did not get good feelings from Asrock support.