Restart your PC and check the Bluetooth “Add a device” notification is gone now. Read: How to turn off or disable Bluetooth in Windows. Alternatively, you can try reinstalling the Bluetooth ...
If you have Bluetooth, you should be able to toggle Bluetooth button and also be able to add Bluetooth devices. This is how it looks in Windows 11- Users who don’t have Bluetooth can still add ...
For a more bespoke approach to adding Bluetooth to a classic controller, check out this NES controller mod. Or check out 8bitdo’s tutorial video for the NES Original mod kit: ...