The Audio Hijack
Windows 11 features a plug-and-play audio system designed for convenience. If you are listening to music through your high-quality desktop speakers and suddenly plug in a cheap USB headset for a quick call, Windows assumes you want all sound routed to the new device and automatically switches your default audio output. While this is helpful for headsets, it becomes a nightmare if you connect a monitor via HDMI or DisplayPort that happens to have terrible built-in speakers. Windows will often blindly switch your audio output to the monitor every time it wakes from sleep, forcing you to manually switch back to your dedicated speakers constantly.
Locking Your Preferred Speakers
To keep your sound exactly where you want it and stop Windows 11 from automatically switching your default audio output to a newly connected or woken device, you must completely disable the unwanted audio endpoint.
Press the Windows key + I to open the Settings application. In the left-hand sidebar, ensure you are on System, then click on Sound in the main panel. Scroll down to the “Advanced” section and click on More sound settings. A classic Sound control panel window will pop up. Stay on the Playback tab. You will see a list of all recognized audio devices. Locate the specific device that keeps hijacking your audio (for example, your Dell or LG monitor). Right-click on it and select Disable. A small downward arrow icon will appear next to it. From now on, Windows will pretend that device does not exist, and it will never automatically switch your audio away from your preferred desktop speakers.