However, the sound might not always work after you connect another monitor to your desktop/laptop with an HDMI cable. Some persons have found that they get no sound when connected to an external monitor, but then the audio works fine when that monitor is unplugged. This is how you can fix the no sound after connecting a second monitor issue on your device.

How do I fix the sound on my laptop after connecting an external monitor?

1. Reconfigure the Default Audio Playback device

It is often the case that audio is lost after connecting a second VDU because the connected monitor automatically becomes the default playback device. HDMI cables do support audio signals, but not all monitors come with their own set of built-in speakers. Thus, you can’t get any sound from a VDU without any built-in speakers. If, for some reason, you can’t see the HDMI in the Playback devices list, check out this excellent guide to learn how you can fix this problem.

2. Update or reinstall the Sound Card Driver

2.1 Update the drivers manually A lack of audio can be due to corrupted or outdated sound card drivers. So, updating or reinstalling the driver might restore sound. This is how you can update the sound driver in Windows 10. 2.2 Update drivers automatically Manually updating the drivers can be a long task that implies a little bit of skill. That’s why, if you don’t want any headaches, we recommend updating your drivers automatically by using a dedicated, third-party tool. The solution recommended below will update and repair all your drivers in one swift action, quickly and with the minimal implication from you. SPONSORED

3. Check the speakers

If the above resolution doesn’t restore audio, check that the speakers are plugged in. Note that external speakers usually have separate volume controls. Disclaimer: this program needs to be upgraded from the free version in order to perform some specific actions. So, make sure that the speakers are turned on. If there is still no sound, check that the speakers work with alternative devices. If not, then you might need replacement speakers. Check out our best picks and choose the ones that suit you.

4. Open the Volume mixer to check the audio settings

It might just be the case that you need to raise your desktop’s or laptop’s audio level settings. So, checking the audio settings is an obvious resolution when Windows audio is seemingly lost. The best way to crank up the volume is to right-click the speaker system tray icon and click Open Volume Mixer on the context menu. First, check that the volume is not muted. If it is, press the Mute Speakers button. In addition, raise all the audio bars displayed there to at least the 70% mark. If dual monitor sound is not working, the lack of sound doesn’t have anything to do with the audio level settings. If the volume control doesn’t work in Windows 10 we’ve got an excellent guide to help you fix it.

5. Open the Windows Playing Audio Troubleshooter

If the Troubleshooter stops before completing the process, fix it with the help of this complete guide. That’s it! We hope that our solutions restored the lost sound for dual-monitor setups and benefit again from the signal out of your second display. Aside from that, system file checker and anti-virus scans might also help resolve the issue of having no sound when connected to an external monitor on Windows 10. If you have any other questions, feel free to drop them in the comments section below.

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