If your camera is not working, you can remove it and reset it to restore the function of the device.
Right-click the START menu and select Device Manager from the menu.
In the Device Manager, expand the Cameras category and select the Integrated Camera. Right-click the device and select Uninstall Device.
In the uninstall dialog box, check the box to Delete the driver software for this device and click Uninstall.
After the uninstall is complete, restart the PC.