Clearing Cmos Settings; Clearing Forgotten Passwords - Dell XPS 15 Service Manual

To enter the System Setup, press F2 immediately after a power-on or reboot.
1 In the System BIOS or System Setup screen, select System Security and press Enter.
The System Security screen is displayed.
2 In the System Security screen, verify that Password Status is Unlocked.
3 Select System Password, alter or delete the existing system password and press Enter or Tab.
4 Select Setup Password, alter or delete the existing setup password and press Enter or Tab.
NOTE: If you change the System and/or Setup password, re-enter the new password when promoted. If you delete the
System and/or Setup password, confirm the deletion when promoted.
5 Press Esc and a message prompts you to save the changes.
6 Press Y to save the changes and exit from System Setup.
The computer reboots.

Clearing CMOS settings

1 Remove the base cover.
2 Remove the battery.
3 Remove the coin-cell
4 Wait for one minute.
5 Replace the coin-cell battery.
6 Replace the battery.
7 Replace the base cover.

Clearing forgotten passwords

Contact Dell technical support to clear the forgotten passwords, see www.dell.com/contactdell.
68 System and setup password
battery.