Godfather;
First you might try clearing the CMOS. first, you need to shut down the computer completely.
Make sure you shut the power off at the switch for the power supply. Open the case and look for the jumper for the CMOS. on the board it might say: 1-2 Normal 2-3 Clear. remove the jumper and position it on jumpers 2-3 to clear the CMOS. If you do this and you haven't shut off the power at the switch the
system will start up that's why you must make sure you shut the power at the switch. put the jumper back in the Normal position and restart the system. everything should be back to normal and you can reenter the BIOS and set everything.
If this does not work try this method: Remove the battery. Same as above but remove the battery from the motherboard. This supplies power to the CMOS and keeps the settings within it's memory. You may have to keep the battery out for a couple of hours or a day for the CMOS to clear entirely. If you have further trouble send me a direct response. I also use the America Megatrends Bios on my Supermicro 370SBA Motherboard.