Both are connected using an HDMI cable, but no audio from the HD display device. So, Windows 10 will take the default audio player like PC speakers. In most cases, you will not be able to find your HDMI device in your sound playlist.
HDMI sound not working on TV when connected to Windows 10 device? Is your HDMI device not showing in sound playback devices in Device Manager?
How to Update Right Audio/Video Drivers on Windows 10.Fix HDMI sound not working on TV windows 10.How to Fix HDMI No Sound Windows 10 – Best Solution.How to Get Sound through HDMI Windows 10.
