If the volume controls on your keyboard stops working, check the Human Interface Device Access service on your computer to make sure it is set to Automatic.
- In the search box on the taskbar, type View local services, and select View local services.
- In the Services box, locate Human Interface Device Access. Make sure the status is set to Running. If it is not running, select Start the service.
- Right-click (or press and hold) Human Interface Device Access and select Properties.
- On the General tab, in the Startup type, select Automatic, and then select OK.