been having this problem for over half of our HP laptops at work (We use the same make and model at work). It started about 2 weeks now. The video just shows busy on Teams but camera works everywhere else and even Teams on Web. At the moment, my work around is disabling camera and re-enabling it. But this happens everyday. Sometimes a few times in the day. I can't find anything that might be causing this. Most of the laptops are on Build 1903 Win 10 Pro.