To enable Secure Boot:

1. Restart the computer and enter UEFI/BIOS settings by pressing keys like F2, DEL, or F10 during boot.

2. Navigate to the "Security" or "Boot" tab.

3. Locate the "Secure Boot" option and select "Enabled."

4. Save changes and exit; the system will reboot.

Note: Ensure your OS supports Secure Boot to avoid boot issues.