Windows 10: Audio from speakers not working with HDMI cable

I just bought a Minis Forum UM690 with Windows 11. My setup is really easy, my pc is connected to the monitor with an HDMI cable and the speakers are connected to the monitor with a jack cable. In the audio settings as default I have "Digital Audio HDMI" with the image of the monitor, so I presume that the pc is trying to take the audio from the HDMI cable, but there is no sound. I have tried to reinstall the drivers and reset the pc, but both didn't work.

:)

 

HDMI audio

I enjoy watching TV shows on my PC through windows 10 and an HDMI cable. It was working great until the past couple of weeks. The video is fine, but there is no audio. I have not changed settings. Is RealTek the speakers in the PC? Shouldn't the HDMI be
listed somewhere. Please respond.

 

Windows11 no audio via HDMI to the 5.1 speakers as soon as projector is ON - working ok on Windows 7 and 10.

SETUP:

Sony 5.1 bdw e780w + Dall Latitude 5530 Windows 11 + Epson projector

STEPS:

connect laptop (DELL) to the Sony bdw (bluray 5.1 system) via HDMI (input) then connect Sony via HDMI cable to the Epson projector (output from Sony, input in Epson).

WHAT i EXPECT:

both audio and video from the laptop is played (video on the projector and audio on the Sony bdw), the same way it was working for years on windows 7 and 10.

WHAT actually is HAPPENING:

when laptop is connected to the Sony 5.1 audio is played via HDMI as expected, Sony is visable as audio output in windows 11. As soon as projector is turned on Sony disapears from the list of audio outputs on windows 11, audio is outputed on laptop speakers and video is played on the Epson projector as expected. in other words widows cannot get both audio and video via HDMI cable to the Sony 5.1 on the same time when projector is turned on and signal is feeded frm the Sony to the Epson.

WHAT i have TRIED:

1. The setup is working perfectly ok on windows 7 and windows 10 (checked on different laptops), same cables, same steps etc. the problem is with Windows 11

2. Dell laptop from the setup is capable of sending video and audio via HDMI, i have pluged Philips monitor (with internal speakers) via HDMI and it was found by W11 as an audio output, both audio and video was played via HDMI

3. I have updated drivers, windows 11 both via windows updater and DELL Support Assist software.

4. I have run windows 11 troubleshooter but is rather limited because as soon as i connect everything Sony disapears from the audio output list and cannot be pointed to the system as a device having problems.

5. DELL laptop is perfectly working with Epson projector if connected directly via HDMI

6. If connected via audio cable from the headphones port of the DELL Laptop to the Sony 5.1 audio is transmited OK via 5.1 speakers (but in much lower quality than if it would be via HDMI) - so the Sony 5.1 is capable of geting audio from the laptop while video is played via HDMI cable directly on the epson projector

please help

 

I have a Lenovo Laptop and connect it via HDMI cable to a Samsung Smart TV. Video plays fine but audio will not play on TV only through laptop speakers

Thank you for replying. First, it was working fine (audio/video on tv) less than a week ago with only plugging in the HDMI cable and did not have to change any settings.

The only output listed is Speakers Real Tec no HDMI