"If the computer does not automatically recover the BIOS, manually perform a BIOS recovery by following these steps:
1. Turn off the computer.
2. Plug the notebook into power using the power adapter.
3. While the computer is still off:
4. Press and hold the Windows key and the B key at the same time, and then press and hold down the Power button on the notebook for one second.
5. Release the Power button and the keys.
By following these steps the BIOS will reach the EFI partition in order to recover the BIOS to the last known good version of the BIOS from the hard drive."
It is an instruction for HP laptop, don't know if it will also work on Gigabyte. It's up to you if you want to give it a try