How to enable Security Boot?

Step 1: Press the power button and immediately press F7 repeatedly to enter the boot menu, then select “Enter Setup” to enter the BIOS setup.

(Or press the Delete key repeatedly immediately after pressing the power button to enter the BIOS settings)

Step 2: Go to Security →Secure Boot →Enabled.

If Secure Boot shows Active, it means the feature is activated and can be enabled.

If it shows Not Active, it means the feature is not activated and cannot be enabled at the moment.

Step 3: Press F4 to quickly save and exit.

(Or go to Save & Exit → Save Changes and Exit → Yes to save the changes and exit.)