Windows 10: PC switches audio output device on its own over and over again (Windows 10 Pro)

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Surface Pro 3 - No HDMI Audio Output

Hi, my Surface Pro 3 HDMI audio stopped working last week, after a year or more of use. Any ideas would be appreciated. I only use this PC to stream entertainment to the TV, and sometimes for Skype. No changes made by me. Thanks!

Here's what I've tried so far:

• Switched cables.
• Switched output devices (receiver and direct to TV)
• Reset Surface Pro
• Disabled/Enabled UEFI TPM in BIOS
• Disabled/Enabled "Intel Display Audio" in device manager
• Messed around with advanced audio settings and format

 

No audio output device

Hello!
I have a common problem: my Windows 10 has No Audio Output Device.
System configuration:

• Lenovo Legion Y520-15IKBN (laptop)
• Windows 10 Pro, version 1909, build 18363.535;
• Current updates;

Device manager shows these audio devices:

• High Definition Audio Device (driver version 10.0.18362.356)
• Intel Display Audio (10.27.0.6)
• ASUS Xonar U3 (10.0.8.2164)

i.e. the problem persists even with an external (USB) audio device, recognized by the system.

I performed a sanity check on this issue. Sound works when I boot into Ubuntu live. Therefore, it is not a hardware problem, and is indeed a Windows problem.

Solutions that have not worked so far:

1. Audio troubleshooter (issues found: check audio device, nothing else)
2. Rolling back drivers
3. Uninstalling audio devices
4. Uninstalling any audio-related devices, incl. the likes of bluetooth speakers
5. Updating audio drivers (from both built-in drivers and from manufacturer's site)
6. Installing a generic audio device (installing a generic USB audio device does not succeed, and installing a generic Realtek device resulted in a BSOD)

Do you have any ideas for fixing this?

 

Auto switch in audio device not working

Hi,

Thank you for writing to Microsoft Community Forums.

We understand the inconvenience you are facing with the audio output.
In order to get clarity and to assist you accordingly, please reply with the answers to the questions below.

• What is the Windows 10 version and Build installed? (Type
  winver in Windows search/Run command)
  
• What is the make and model of the PC?
  
• Are you aware of any recent changes on the PC, prior to this issue?

Please provide us the screenshot of the window where you are switching the audio devices. Please follow the steps mentioned in the

screenshot posted by Shawn 'Cmdr' Keene on Oct 2, 2015 to post the screenshots.) Do not share any personal information in the screenshots.

Meanwhile we would like you to uninstall the sound/audio driver from the device manager and re-install it the PC manufacturer website.

1. Press Windows + X and click on Device Manage.
2. Expand or double-click Audio Inputs and Outputs.
3. Right-click on the listed driver, and then select
   Uninstall device
4. Select Delete the driver software for this device, and then click Uninstall.
5. Follow the onscreen steps and restart the PC.
6. Upon restart, install the Audio drivers from computer manufacturer website.

Regards,

Aditya Roy

Microsoft Community – Moderator