I actually experienced the exact same issue with my Windows 8 install on an ASRock CoreHT 252B Mini PC, which acts as my HTPC. Probably the same or similar as you, I'm outputting both video and audio ...

Before, make sure your HDMI cable is connected to both your computer and your output device. How to select the HDMI sound output as the audio device? Windows 11 Click on the volume icon on the taskbar ...

If there is no sound when your computer is connected to your TV with an HDMI cable, use the fixes provided below to get rid of this problem. It is important that the audio device you want to use is ...

I've been trying to get my laptop to send audio over the HDMI output into the HDMI ARC input on a new amp. Didn't work with the 11yo v1.2 cable I'd been using but also doesn't work with the one ...