Nvidia 400 - Manual (Page 54)

BIOS
Page 4-22
4-11 Exiting BIOS
Save & Exit Setup
Pressing <Enter> on this item asks for confirmation:
Save to CMOS and EXIT (Y/N)? Y
Pressing “Y” stores the selections made in the menus in CMOS – a special section
of memory that stays on after you turn your system off. The next time you boot
your computer, the BIOS configures your system according to the Setup selections
stored in CMOS. After saving the values the system is restarted again.
Exit Without Saving
Pressing <Enter> on this item asks for confirmation:
Quit without saving (Y/N)? Y
This allows you to exit Setup without storing in CMOS any change. The previous
selections remain in effect. This exits the Setup utility and restarts your computer.