Hi BARNEYWARREN,
I'm Anwille, an Independent Advisor.
Sorry to hear you're experiencing this issue.
You can try to unplug and replug the camera. You can also try it on other device.
I suggest trying to check updates first by going to settings > Windows Updates. Install any pending updates you may find.
If these steps didn't work, you can try to update your webcam drivers through these steps: https://support.microsoft.com/en-us/windows/upd...
Hope this helps. Let us know if you need more assistance.