Kit Guide: Fixing no sound on your TV from your computer


Getting sound from your computer to your TV can be tricky without the right cables and settings. This guide will help you get it set up.

If you plug your computer into a TV and there's no sound


There could be a few reasons for this. The settings on your computer could be wrong, or the cable you're using might not support sound. Here's what you'll need to check.

Checking the cables

There are lots different cables that you can use to connect your computer to your TV, but only a few of them support both video, and audio. Make sure the cable you're using is able to send sound to a TV.

  • HDMI - supports audio, and can be used with all current computers and TVs.
  • DisplayPort - supports audio, and is normally found on computers, but your TV probably won't have a DisplayPort connector. You'll need to use a DisplayPort to HDMI cable to connect to your TV.
  • USB Type-C - supports audio using an adapter. You'll need a USB Type-C to HDMI adapter to connect to a TV.
  • VGA - doesn't support audio. You'll need a separate cable to hear sound from the PC on the TV. Most TVs have an 'audio in' port that connects your computer using a 3.5mm to 3.5mm cable (it's the same type of connector you'll get on most headphones).
  • DVI - doesn't support audio. You'll need to use a separate cable to hear sound from the PC on the TV. You can use a 3.5mm to 3.5mm audio cable to connect the computer to the 'audio in' on your TV.

Configuring sound settings

Once you've connected your computer to your TV with one of the connections we've mentioned, you'll need to check that the settings on the computer are right.

If you have a Windows PC/laptop


Click into the search box, and type 'Sound', then click Sound.


On the 'Playback' tab, look for the option that matches the type of cable and connectors you're using (if you're using a 3.5mm cable, you might need to choose the 'headphones' option).


Click on the correct output, then click Set Default.


Click Apply at the bottom, and click OK to close the box.

Sound should now play from your TV.

If you have a Mac


Open System Preferences.


Click Sound.


On the 'Output' tab, click the device you want to send sound to. If you're using an HDMI cable, you should see the model of your TV, or you'll see 'headphone jack' if you're using a 3.5mm cable.

Sound should now play from the TV.

Hopefully that sorted out the problem, but if you need any extra help, you can get in touch with a Team Knowhow Expert here.

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