Windows 11 – Bluetooth capability missing – Microsoft …

11) If nothing else helps you can run a Repair Install by installing the Media Creation Tool and choosing from it to Upgrade Now. This reinstalls Windows in about an hour while saving your files, apps and most settings, solves many problems while also bringing it up to the latest version 1909 which you need anyway and by the most stable method.

https://answers.microsoft.com/en-us/windows/forum/all/windows-11-bluetooth-capability-missing/8f340147-fded-4367-9bce-dcef4752db3e