Please follow below procedure to fix corrupt BIOS ROM that not physically damaged:

1. Turn off the computer.
2. Adjust SB switch to Single BIOS mode.
3. Adjust BIOS switch (BIOS_SW) to the functional BIOS.
4. Boot up the computer and enter BIOS mode to load BIOS default setting.
5. Adjust BIOS Switch (BIOS_SW) to the non-working BIOS.
6. Flash the BIOS by using Q-Flash.
7. Reboot and confirm if BIOS is working.
8. Shut down the computer and adjust BIOS Switch (BIOS_SW) to original BIOS.
9. Boot up the computer and confirm BIOS are working properly.