Lenovo 5354 - Manual (Page 48)

Exiting from the Setup Utility program
After you finish viewing or changing settings, press Esc to return to the Setup
Utility program main menu. You might have to press Esc several times. If you
want to save the new settings, press F10 to save and exit the Setup Utility
program. Otherwise, your changes will not be saved.
40 User Guide