This bios acted different when it rebooted after the flash. Once it had powered off, I pressed the power switch, and it powered on for a sec and then off. I tried this three times, same thing happened each time. I then pressed the Clear CMOS button for three seconds, turned the PSU power off and then back on, and it powered up fine.
Remember, once you enter the bios first time, don't do anything. Just save and exit. Then when you enter it on the second go, change values as you desire.