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XPS 14 9440 Owner's Manual

Clearing chassis intrusion alert

The computer features a chassis intrusion switch that detects when the base cover is removed from the computer.
Figure 1. Security menu in BIOS Setup
Image: Security menu in BIOS Setup
The chassis intrusion feature raises an alert of any unauthorized attempt to access the internal components of the computer. This feature is configured using the Chassis Intrusion field of the Security sub-menu in the BIOS setup menu.
Figure 2. Chassis intrusion alert
Image: Chassis intrusion alert
When enabled, the Block Boot Until Cleared field enables you to choose whether to prevent normal boot of the computer until the intrusion alert is cleared. If Block Boot Until Cleared is set to OFF, select Continue to boot or BIOS-Setup to clear the alert.
NOTE:If Continue is selected, the alert message appears each time when the computer is turned on until the alert is cleared.
Figure 3. Warning message indicating that the Block Boot Until Cleared field is set to OFF
Image: Warning message indicating that the Block Boot Until Cleared field is set to OFF
To clear the alert, select ON in the Clear Intrusion Warning field in the Security sub-menu of the BIOS setup menu.
Figure 4. Clearing the intrusion warning
Image: Clearing the intrusion warning

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