I'd like to add to the chorus of thanks. After many years of thinking I was somehow messing configuration items up when occasionally getting my ASRock H77M to work but more often than not would fail to boot properly. I usually just gave and moved the same disk to my Gigabyte where it worked perfectly and give up once more on the ASRock. It was so on/off flaky I really didn't fully consider the faulty UEFI implementation, even though that entry was always what is missing. Thank you for giving this machine more life.