Try Flashing the Unmodified v2.4 BIOS like this: AFUD4310 A7366NMS.240 /p /b /n /c Test it and make sure it works properly. If it works like it should, Then try the Modified BIOS like This: AFUD4310 A7366NMS.240 /p /n /c
Sadly with MSI MB's there aren't many recovery options. If the BIOS is removable you could hot swap it or have it reprogrammed, other than that I have no idea what you could do.