Dell Precision 610 - Manual (Page 18)

implementing any changes you have made.
Discard Changes and Exit option exits the System Setup program without rebooting the system
and returns the system to its previous state - the boot routine.
Return to Setup option returns to the System Setup screen.
Resets the selected options to their default settings.
Displays help information for the selected option.
Figure 3-1. Typical System Setup Screen
System Setup Options
The following subsections explain in detail each of the options on the System Setup screen.
System Time
System Time resets the time on the computer's internal clock.
Time is kept in a 24-hour format (hours:minutes:seconds). To change the time, press the left- or right-arrow keys to select a field,
and then press <+> or <-> to increase or decrease the number. If you prefer, you can type numbers in each of the fields.