Deleting Or Changing An Existing System Setup Password; Expresssign-In - Dell Latitude 9420 Service Manual

● A password can have up to 32 characters.
● The password can contain the numbers 0 through 9.
● Only lower case letters are valid, upper case letters are not allowed.
● Only the following special characters are allowed: space, ("), (+), (,), (-), (.), (/), (;), ([), (\), (]), (`).
3. Type the system password that you entered earlier in the Confirm new password field and click OK.
4. Press Esc and a message prompts you to save the changes.
5. Press Y to save the changes.
The computer reboots.

Deleting or changing an existing system setup password

Prerequisites
Ensure that the Password Status is Unlocked (in the System Setup) before attempting to delete or change the existing
System and Setup password. You cannot delete or change an existing System or Setup password, if the Password Status is
Locked.
About this task
To enter the System Setup, press F2 immediately after a power-on or reboot.
Steps
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 prompted. If you delete the
System and Setup password, confirm the deletion when prompted.
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 restarts.

ExpressSign-in

On Dell Latitude systems, the proximity sensor is accessed when the system is ON or in the sleep mode. The valid state of the
proximity sensor is Near, and Enable with external monitor. The proximity feature is automatically disabled while the laptop is
in the On state, and the remaining battery of the laptop is less than 30 minutes.
ExpressSign-in behavior in Near state
The following table explains the Near state behavior:
NOTE: The Dell ExpressSign-in user interface is the proximity sensor feature.
NOTE: In the ExpressSign-in window, click Go next to the Setup facial recognition field to start and setup the
Windows Hello facial sign-in option.
Table 21. Near state behavior
System state
ON/Standby
Description
Wakes up the system when the user is within the sensor Field
of View (FoV) of the system during the ON state and the LED
illuminates solid white light or in the standby state.
System setup 79