Zoom unable to detect camera

This problem occurred after a recent Zoom update. The camera selection box in the video section of the Zoom settings is empty and greyed out.

The ASUS Zenbook laptop is running windows 11 and the integrated camera works fine on other apps.

I've uninstalled / reinstalled the Zoom client and all the camera setting are on. The camera drivers are the latest level. I've followed the advice on various chat rooms, including resetting the camera, but nothing seems to work.

Help!?