1 - Download latest BIOS from ASUS support website for your particular unit.
2 - Extract BIOS file from zip/rar file you downloaded.
3 - Place the extracted file in your C:\ drive.
4 - Reboot unit - press ESC or F2 as soon as your unit restarts
5 - Enter BIOS and scroll across to ''Advanced''
6 - Enter Easy Flash
7 - Press Enter on Main Drive (Usually FS1)
8 - Select BIOS file you downloaded earlier
9 - Voila, it should now flash the new BIOS
10 - After restart, go back into BIOS, press F9, then F10.
Then you're all good 🙂