No Sound Over HDMI When Connecting Laptop or PC to TV: Possible Solutions

Connecting a computer or laptop to a TV via HDMI typically transmits both video and audio. However, sometimes, while the video displays correctly, there is no sound. This issue can arise due to various reasons. Let’s explore the main causes and solutions.

1. Check Audio Settings on Your Computer

A common reason for missing sound over HDMI is incorrect settings on the computer. Try the following steps:

  • Open the Control Panel and go to the Sound section.
  • In the Playback tab, find your TV or HDMI device.
  • Right-click on it and select Set as Default Device.
  • If the device appears as Not Plugged In, check the cable connection or restart your computer.

After following these steps, the sound should play through the TV.

2. Ensure Your Sound Card and HDMI Drivers Are Up to Date

Sometimes, outdated sound card or HDMI adapter drivers can cause audio issues. Update your drivers through the Device Manager or download the latest versions from the manufacturer’s website.

3. Check Audio Settings on the TV

In some cases, the problem lies in the TV’s settings. Make sure the correct audio source is selected:

  • Go to the Settings menu on your TV and find the Sound section.
  • Ensure that HDMI or the appropriate input is selected as the audio source.

Also, check the TV’s volume level to ensure sound is not muted.

4. Try a Different HDMI Cable or Port

Some HDMI cables may be damaged or may not support audio transmission. If you have an extra cable, try using it. You can also try a different HDMI port on the TV if available.

5. Check BIOS Settings (For PCs)

In rare cases, HDMI audio may be disabled in your computer’s BIOS. To check this:

  • Restart your computer and enter the BIOS (usually by pressing the Delete or F2 key).
  • Look for a section related to audio or multimedia, and ensure HDMI is enabled.

Afterward, save your changes and restart the computer.

6. Try Adjusting Screen Refresh Rate

In some cases, changing the screen’s refresh rate can help. Try setting a lower refresh rate:

  • Go to Display Settings on your computer.
  • Select Advanced Display Settings and choose a different refresh rate (e.g., 60 Hz).

After this, check if the sound appears.