Therefore, if your system is in Setup mode, you cannot enable the Secure Boot. Change the Setup Mode to User Mode and you will be able to enable Secure Boot.

Back to the BIOS Setup Utility, System Configuration / Boot Options / UEFI Boot Order. Choose OS Boot Manager, and a window will pop up with a list of boot targets.

If your Use original boot configuration option is greyed out in Windows 11/10 System Configuration MSConfig utility, then fix the problem by following this method.

Enter msconfig and press Enter to launch the System Configuration app. Click on the Boot tab, and under Boot options, select the Safe Boot checkbox > the Minimal option (Figure B).