04-25-2018 07:21 AM
You might need to enable it.
With the monitor connected, turned on and displaying your computer's desktop:
Right click on the speaker icon in the taskbar and select "playback devices."
In the white area of the dialog box, right click and make sure both "show disabled devices" and "show disconnected devices" are both checked.
Right click on the various playback devices to make sure they're all enabled.
If you start something with audio, you should see the little green "meters" bouncing on one of the devices. Right click that device and set it to default.