OK thought I had mine stable and then I rebooted

Very strange thing I could reboot 5 times just fine and then the next time the overclock beeps go nuts.

I can change a few things and it will boot up just fine, then go back and change to 20x200 and it works great. Then I could reboot a few times and
all of a sudden it does the same thing.

Anyone else getting odd stuff like that with the new Bios F6a?