Gigabyte AMD Socket 939 Processor Motherboard GA-K8NXP-SLI User Manual page 35

Set User Password
Change, set, or disable password. It allows you to limit access to the system.
Save & Exit Setup
Save CMOS value settings to CMOS and exit setup.
Exit Without Saving
Abandon all CMOS value changes and exit setup.
- 35 - BIOS Setup