If the Multimedia Class Scheduler Service is present on your system, that too should be Started and set on Automatic. You should ensure that its Dependency Services are started and have Automatic Startup type:
If it already started, Stop it and then start it again. Set the Startup Type to Automatic and click on the Start button. If this service is disabled, any services that explicitly depend on it will fail to start If this service is stopped, audio devices and effects will not function properly. This Service manages audio for Windows-based programs. Scroll down to Windows Audio Service and double-click on it to open its Properties. Run services.msc to open the Windows Services Manager.
The Audio Service is not running in Windows 1] Check the status of Windows Services If you see a red X mark on the Speaker icon in the Notification Area, and when you hover over the icon, you see a message The Audio Service is not running on your Windows 10/8/7 PC then here are a few things you need to take a look at.