Windows 11 requires and Secure Boot . Most AMD systems from 2018 onward (Ryzen 2000 series and newer) support this.
If missing, enable in BIOS:
: Testing revealed that running certain games in "Hidden Administrator" mode could unlock even higher performance on Zen 5 processors, though recent Windows updates aim to make these gains standard for all users. Hardware Compatibility & Requirements amd windows 11
Windows 11 introduces several technologies that specifically leverage AMD’s architecture: Windows 11 requires and Secure Boot