Your Mobo has a dual BIOS feature.
"DualBIOS™ - Patented Dual Hardware BIOS Protection
DualBIOS™ is a GIGABYTE patented technology that automatically recovers BIOS data when main BIOS has crashed or failed. Featuring 2 physical BIOS ROMs integrated onboard, GIGABYTE DualBIOS™ allows quick and seamless recovery from BIOS damage or failure due to viruses or improper BIOS updating."
If you can enter BIOS, but your OS doesn't load, chances are your problem may be elsewhere. Maybe your Raid driver is shot, you can try loading or re-installing without raid.