Can't enter BIOS due to administrator / user password

Whilst trying to enable secure boot state through BIOS, I created an administrator and user password.

I did not realize I would need to enter this password at every start up and now I cannot enter bios before or after entering my password as the normal ways of entering BIOS is not working.

Just trying to play games without the error message, 'Secure boot is not enabled on this machine,' appearing.

Any help would be much appreciated.