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Windows 10 wont play MP3 if there is an HDMI cable connected


Issue:

Windows 10 plays Mp3 Files just fine. Connect an HDMI cable to the video output port, and then windows 10 suddenly wont play those files. An error message pops us inside windows media player and Grove that this file type is not supported. Also no sound is played through the HDMI Cable to my TV, and no sound is played when i click the volume bar on the bottom right side.

More detail:

I work for an integration company. We just installed a couple of conference rooms for a company in which we have an HDMI cable running from the table through the floor in the walls and to the TV. From there it breaks out into the Amplifier and plays audio in the room. Normally i bring my Mac book pro for testing but i purchased this Windows 10 computer as a test device. I did not have a second laptop with me to test this out.

However, With the computer and the HDMI cable i am getting video to the TV. When i enter my TV menu and arrow around the menu option my sound works on the built in speakers in the room. So i can confirm that the cabling is all correct. This is the identical setup that we always use. I have also plugged my Iphone into the cabling behind the TV and played music which worked perfectly fine.

The computer, as i mentioned, would play MP3 files perfectly fine, untill i plugged in the HDMI cable. Infact i can be playing and MP3 file and then plug in the hdmi cable and suddenly the computer stops playing the MP3 file and gives me the error that windows can not support this file type. Those same MP3's play on an SDCard in the TV when i access them directly from the tv. So those files are not bad. Also anything with audio fails to play anywhere (tv or locally on the laptop) when the HDMI is plugged in.

Also i have gone to the control panel and selected the Audio section and looked at the video card / audio output selections. When i have no HDMI cable selected the option for audio output changes to the internal sound card. (which is correct) and then i plug in the HDMI Cable and the audio switches to the HDMI output (which is correct)

the only two conclusions i can come up with are this particular computer has a bad video card. or windows 10 is not supporting audio output. I have never tested our setups with windows 10 before.

Last bit i'll include this is a brand new computer. Core i5 8Gb ram 1tb hard drive. its a toshiba.

what are your thoughts? have you seen this happen before?

Hi, welcome to windowssh blog. There are other threads on this forum with similar symptoms. Just search 'hdmi'

This may point you in the right direction:
Solved No audio after upgrade from 8.1 to 10 using HDMI cable - Windows 10 blog

Please have a look at the others if that doesn't help and post back if not resolved. Good luck!

Hi, welcome to windowssh blog. There are other threads on this forum with similar symptoms. Just search 'hdmi'

This may point you in the right direction:
Solved No audio after upgrade from 8.1 to 10 using HDMI cable - Windows 10 blog

Please have a look at the others if that doesn't help and post back if not resolved. Good luck!

Well i did see those post but those were particularly about a driver issue with the windows 10 upgrade. Essentially those pc did not have a Windows driver for hdmi audio

In my case this does show up as an hdmi sound card option and this is not an upgrade its factory installed Windows 10.

Windows update are fully updated.

Thanks for those links though.

Windows 10 wont play MP3 if there is an HDMI cable connected