I have the Same ASUS Board, mine worked with both BIOS 7106, and now 7202.
All I can think is to try and flash the last bios again using the Flash Back process.
You need to put the bios file on a usb stick, name it C6H (leave the .CAP)
There is one usb port on the back you need to have the usb plugged into, then press and hold the BIOS Flash button in the rear io panel until it flashes.See this link: How to use USB BIOS Flashback? | Official Support | ASUS USA