Camera not found

Hi,

My camera was working fine from the time I got my laptop (XPS13) until yesterday when I turned it on and couldn't use it on Slack/Teams etc. In Devices section it says no cameras found. I have uninstalled and reinstsalled & made sure all updates have been triggered. When I go to troubleshooting the camera doesn't appear in the list. I don't think there is a camera button that I could have switched off accidentally.

Any help would be appreciated