I recently purchased a Gigabyte GA-J1800 motherboard to build a new server specifically to run my Sophos UTM system (thanks to actually having a decent broadband connection now, it needs more horsepower than my little over-crowded ESX lab).
However, I had MASSIVE problems with the board immediately. Getting into the BIOS was completely impossible, so I couldn't actually get past the EFI Boot Shell. Argh.
Solution? Install Windows 8.1, upgrade the BIOS using the Gigabyte AppCenter then everything was a success. Total nightmare however, and a major FAIL on the Gigabyte Quality Control.
It's also really picky about what USB Keyboard you use too ...