Accidentally deleted an Audio playback device

[Bay Area]

When I was watching movies on my computer through my HDMI, I accidentally disabled the device so now the sound only comes out of my computer. How can I restore this function?

 

[Pauly]

Could you not enter Device Manager>Sound, video and game controllers>High Definition Audio Device and click enable device ?
If there is a problem with the device there will probably be a yellow caution next to it to indicate this

 

[DavidE]

Right click the Playback window.
Click "Show Disabled Devices".
You should now see the device so you can re-enable it.

I always keep both "Show Disabled Devices" and "Show Disconnected Devices" checked so i can see all devices.