You need to check if the volume is muted and if the sound output device is set to an external TV or monitor.
Causes and Symptoms
Windows volume is muted.
The monitor has no built-in speaker.
Windows sound settings are not configured correctly.
There is a problem with the audio or graphics driver.
※ If there is no sound from the monitor, first check if it has a built-in speaker.
Try this
How to adjust the volume using the hotkeys on the keyboard
On the keyboard, press the hotkeys, [Fn] + [F11] ~ [F12] to adjust the sound volume.
Checking mute or sound output status in Windows
On the right side of the task bar, check if the [Speaker] icon is muted, and adjust the volume to check if there is sound output.
Select the [Select a sound output] icon.
Select a TV or monitor that can support [Sound Output] and check if the sound output works properly.
Checking [Sound Settings] in Windows 11
Locate the [Speaker] icon on the right side of the task bar.
Right click it with your mouse and select [Sound Settings].
Click [Choose where to play sound] and select [Speakers].
Under [General > Audio], check whether the sound device is set to [Allow] or [Don’t allow].
※ If it reads [Allow], then no sound will be heard.
In the [Output Settings] menu, click [Test] to check if there is sound.
Locate the [Speaker] icon on the right side of the task bar.
Right-click the icon, select [Troubleshoot sound problems] and click [Next].
※ Click [Troubleshoot sound problems] to automatically resolve the problem in Windows.
Checking [Sound Settings] in Windows 10
Right-click the [Speaker] icon located on the right side of the task bar. Then select [Open Sound Settings].
Click [Manage sound devices].
※ Select [Troubleshoot sound problems] to automatically resolve Windows sound problems.
Click [Speakers], then click the [Enable] button.
※ Click the [Test] button to see if you can hear sound (voice).
Right-click the [Speaker] icon located on the right side of the task bar.
Then select [Open Volume Mixer].
In [Volume Mixer], you will see the different open [Applications].
You can adjust the sound of each application.
How to download and install an audio driver
You can install an audio driver by using [LG Update Program].
LG Update apps allow you to install software from LG Electronics that is suitable for your system.
Install the [ LG Update Installer Download ] file to run LG Update apps suitable for your system.
This guide was created for all models, so the images or content may be different from your product.