Request bios backup file here for this model : Gigabyte Chipset Z77 BIOS G1.Sniper 3 G1.Sniper M3 GA-Z77-D3H GA-Z77-DS3H GA-Z77M-D3H GA-Z77M-D3H-MVP GA-Z77MX-D3H GA-Z77P-D3 GA-Z77X-D3H GA-Z77X-UD3H GA-Z77X-UD5H GA-Z77X-UD5H-WB WIFI GA-Z77-HD3 GA-Z77-HD4 GA-Z77MX-D3H TH GA-Z77N-WIFI GA-Z77X-UD3H-WB WIFI GA-Z77X-UD4H GA-Z77X-UP4 TH GA-Z77X-UP5 TH GA-Z77X-UP7 Intel® Z77 Chipset