ASUS 550L put in new battery, was directed to Aptio Setup Utility, as per directions went to
Security > Secure Boot menu and then Secure Boot Control then disabled
Also, under Boot menu > Launch CSM I enabled
Saved all changes and rebooted.
I tried various key suggestions FN,F4, F6, F8 etc and I still got referred to this message:
“Reboot and Select proper Boot Device or Insert Boot Media in selected Boot Device and press a key
Security > Secure Boot menu and then Secure Boot Control then disabled
Also, under Boot menu > Launch CSM I enabled
Saved all changes and rebooted.
I tried various key suggestions FN,F4, F6, F8 etc and I still got referred to this message:
“Reboot and Select proper Boot Device or Insert Boot Media in selected Boot Device and press a key