When your LG monitor sound is not working, begin troubleshooting by setting the LG monitor as default audio playback device in Windows settings.
If its still not working, update the sound card drivers, run Windows audio troubleshooter, restart your PC, or factory reset your LG monitor.
While this guide is specific to LG monitor, it will also work for troubleshooting audio on other monitors like BenQ, HP, Dell or ViewSonic.
Now let me explain each of the above methods in detail.
If you have any headphone or speakers directly connected to your LG monitor, remove them and check if that resolves the problem.
The audio issues on your LG monitor can also be due to a damaged cable. So, check both ends for damage and replace it if necessary.
First, verify that you have not muted the volume on your computer or on the monitor using its on-screen settings.
To un-mute volume on your PC, right-click on the volume icon in the taskbar and un-mute it, if its muted.
Next, ensure that your LG monitor is selected as Output device.
To do that, again click Volume icon and then click on Speaker button as shown in the screenshot below:
Next, select your LG monitor from the list.
Check the speaker icon in the menu bar and make sure it’s not muted.
Check Default Audio Playback Device
When you have more than one audio device connected to your computer, you need to ensure that your preferred audio output device is selected in Windows.
Since you have connected your computer to your LG monitor with built-in speakers, it is likely that this is your second audio output device.
On Windows 10? Skip to steps for Windows 10.
Here’s how to select your preferred playback device in Window 11:
- Open Settings by pressing Windows + I keys. You can also open it from Start Menu.
- Select the System. Next, click on Sound on the right panel.
- Scroll down and under the Advanced section, click on More sound settings.
- Select your LG monitor from the list and click the Set Default button. See the screenshot below:
Steps for Windows 10
- Open Settings from Start Menu.
- Click on System.
- Next select Sound.
- Under Choose your output device, click on the down arrow and select your LG monitor from the drop down list.
Update Sound Card Driver
Make sure you have the latest sound card drivers installed on your PC.
- Press Windows + R keys to open Run dialog box.
- Type dxdiag and hit Enter to open Device Manager.
- Expand the Sound, video, and game controller section.
- Right-click each item there one by one and select Update Driver from the context menu.
- In next window, select Search automatically for the driver option.
- Once your graphics card drivers are updated, restart your computer for changes to take effect.
Run Windows Audio Troubleshooter
Both Windows 10 and Windows 11 have a built-in troubleshooter that helps users resolve common issues.
- Open Windows Search by pressing Windows + S keys to open Windows Search.
- Type Troubleshoot settings and then open it from search results.
- In the right panel, select Additional troubleshooters.
- Click on Playing Audio and then click on the Run the troubleshooter button.
Now the audio troubleshooter will scan your PC and monitor for issues and then suggest solutions.
Restart your PC
Did you recently install a new software on your computer? Perhaps that has caused the audio issues. This is because most computer programs over-rides system settings and create cache files.
Restarting your PC wipes away these temporary settings and cache files.
So if your LG monitor audio issue is caused by any software, then it will be gone after your PC restarts.
Reset your Monitor
The last troubleshooting steps is to restore default factory settings on your LG monitor.
To do that, press the menu button on your monitor. If your LG monitor has a joystick, press it to open OSD menu.
Next, go to the General and select the Reset to Initial Settings.
If you have any questions or queries related to this guide, feel free to ask me!