DO NOT go to http://www.driverguide.com
to get your update. You have to goto the manufacture's site and get the update for your EXACT model and version of motherboard. You will need 2 diskettes. One to create a boot disk, and the other for the BIOS update.
Restart and boot into DOS. Insert the diskette with the update, and flash the BIOS. Read the instructions from the manufacture's site as you may need a certain string to attach to the command.
Once the BIOS is updated... Power off the computer. Clear the CMOS by switching the jumper on the motherboard. Power on your computer and reconfigure the BIOS and you are good to go!
Goodluck! I hope this helped.