First noticed this when I tried the MS Camera App and got back the error message "We can't find your camera. Check to be sure it's connected and installed properly, that it isn't being blocked by antivirus software, and that your camera drivers are up to date. If you need it, here is the error code: 0xA00F4244<NocameraAreAttached>".
Then I went online to HP support. Note: The troubleshooting section for built-in all-in-one cameras is non-existent. The troubleshooting info for external cameras was not helpful. But I did find advice at HP to go into my device manager and reinstall or update the camera drivers. So, I went into the Windows Device Manager. There is no camera driver listed either under Imaging Devices or Sound, Video, Game Controllers.