Recently when I rebooted my computer, the audio stopped running. Usually, troubleshooter will automatically fix the problem, but surprisingly in this occasion, even the troubleshooter failed to start. The speaker icon in the notification area had a red cross over it.
Here’s a work around:
1. Click on Start, and type Services.msc in the search bar.
2. Scroll through the list of services, right click on Windows Audio and click Start.
If this doesn’t work, make sure, you have started all other dependent services such as Plug and Play, Multimedia Class Scheduler, Windows Audio Endpoint Builder