Hi
If the machine is complaining that there is no BIOS there then I think you are going to have to RMA the board. You could try to get it to use the Backup BIOS but I don't know if that would be successful. Try this:
You can kick in the backup BIOS by shutting down the PSU from the wall, then hold down your case power button in and then turn on the power supply button, a few seconds later the board will start, shut off the power supply then. Then you can turn on the power supply again and power up the board normally and DualBIOS will kick in.