Before heading into the BIOS, check if Secure Boot is actually active. Press the to open the Run box. Type msinfo32 and hit Enter. In the System Summary list, look for Secure Boot State .

Here is the exact process to turn off Secure Boot on a Windows 11 PC.

Look for a line item labeled Secure Boot .

To turn Secure Boot back on for better security:

Many Linux distributions require Secure Boot to be disabled to initialize their bootloaders.