If your physical shutter is open but your OS still says the camera is unavailable, the software button is locked. Here is how to achieve a truly workflow—meaning you don't rely on the broken HP button at all.
On certain ZBook models, there is a dedicated electronic "kill switch" on the keyboard rather than a manual slider. Solved: Zbook power G10 camera key - HP Support Community
If your physical shutter is open but your OS still says the camera is unavailable, the software button is locked. Here is how to achieve a truly workflow—meaning you don't rely on the broken HP button at all.
On certain ZBook models, there is a dedicated electronic "kill switch" on the keyboard rather than a manual slider. Solved: Zbook power G10 camera key - HP Support Community hp zbook camera button free