Eventuelt prøv dette:
I had the same problem on a Lenovo ThinkPad P52.
In the BIOS, Secure Boot was enabled, but Windows 11 showed "Secure Boot State" as "Off".
The cause was, that the Secure Boot Mode in my BIOS was set to "Setup Mode".
To change it to "User Mode", I had to select "Restore Factory Keys" on the Security Page in the BIOS.
After that, I could start the computer and Windows 11 displayed that the Secure Boot State is "On".
Maybe this helps someone.
Kilde:
https://answers.microsoft.com[...]
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