I’ve been experiencing a strange issue. Windows 10 on a Surface Book 3 connected to an external HDMI device (in this case an LG TV or a Samsung Series 8 TV). Picture was fine, just no audio. I finally got around to troubleshooting the issue and this is a strange one.
I cannot pinpoint exactly which updated causes the issue, but if you are experiencing the same problem – no sound – then this is the workaround:
- Right-click speaker icon in taskbar
- Select Playback devices
- Ensure the default sound device is the correct one for your machine and right-click
- Advanced tab
- Change Default Format to something that is NOT (DVD Quality) – I choose Studio quality. Click OK
- This should resolve your issue
Some forums talk about updating drivers etc., whilst this may fix your issue – try the above first, if audio working as normal through other outputs.