Sometimes, the camera appears in Device Manager but has a small down arrow on its icon. This means the device is disabled. Right-click on it and select Enable device to solve this problem. On some newer HP ZBook models, a "Poly Camera Pro" driver may need to be run. If this device appears as disabled in Device Manager, simply launch the "Poly Camera Pro" application from the Windows search bar. Running the app will automatically update it and enable the device.
Since "camera button free" could imply two different meanings, I have written a dual-purpose essay that covers both the literal repair/fix scenario (freeing a stuck button) and the metaphorical/economic scenario (using it without paying for software). hp zbook camera button free
Some ZBook models use a dedicated keyboard button, often located near the power button or along the top row, with an icon of a camera. To enable the camera, press this key. You can also press it again to disable it. Sometimes, the camera appears in Device Manager but
Protects against "camfecting," where hackers secretly activate webcams. On some newer HP ZBook models, a "Poly
Sometimes, other programs can hold a "lock" on the camera resource, preventing other apps from using it. To test for this, close all applications, particularly any that might use the camera, such as Zoom, Microsoft Teams, Skype, Slack, or any video conferencing or photo apps. After you have closed all potential applications, try opening a single app, like the built-in Windows Camera App, to test the camera. If it works, the issue was a temporary lock that was released when you closed the conflicting apps. A full restart of your laptop will also achieve the same effect.