How to Disable a Display or Monitor as an Audio Device on Windows

Step-by-Step Instructions

1. Open Sound Settings

• Right-click the volume icon in your system tray (bottom-right corner of your screen)

• Select Open Sound settings

  
  Alternatively: Go to Start > Settings > System > Sound

2. Go to Manage Sound Devices

• In the Sound settings window, scroll down to the Output section

• Click on Manage sound devices

3. Disable the Display Audio Device

• Under the Output devices list, find your monitor/display (this might be labeled as something like “DELL U2417H (DisplayPort)” or your monitor’s brand/model)

• Click on the device, then click the Disable button
  

  

4. Confirm Your Headset is the Default

• Back in the main Sound settings screen, under Output, use the dropdown to select your preferred headset or speakers

• This ensures that Windows consistently uses the correct device—even after restarts or display changes
  

  

Why This Helps

Disabling unused audio devices like displays or HDMI monitors prevents Windows from accidentally switching audio output during calls, which can make it seem like your call dropped or went silent.

For best results in Symbo:

• Always select a specific audio device (not “Default”) in your Symbo audio settings

• Keep only the devices you want to use in Symbo enabled in Windows System Settings