Peripherals

HDMI connected but no sound through TV or monitor

When video works over HDMI but there's no sound, the computer is usually still sending audio to its own speakers rather than the HDMI output. Changing the audio output device fixes most cases.

Difficulty
Easy
Time
10–20 minutes
DIY cost
$0–$15

Symptoms

  • Picture shows on the TV/monitor but no sound comes from it
  • Sound still plays from the laptop speakers
  • Sound worked before but stopped after a reboot
  • Audio cuts in and out over HDMI

Likely causes

  • CommonWrong audio output device selectedWindows and Mac don't automatically switch audio output to HDMI just because video is being sent that way.
  • CommonTV/monitor doesn't have speakers enabled or mutedSome displays default to muted or have a separate audio output setting.
  • PossibleHDMI cable or port issueSome cables or ports can carry video but have a faulty audio channel.
  • PossibleOutdated graphics or audio driverHDMI audio relies on both graphics and audio drivers working together correctly.
  • Less commonDisplay doesn't support audio over that specific inputSome monitors only support audio over certain input types.

What to do

  1. Right-click the sound icon in the taskbar (Windows) or open Sound settings and select the TV/monitor's HDMI audio as the output device.
  2. Check the TV/monitor's own volume and mute settings, and confirm the correct input source is selected.
  3. Try a different HDMI cable and port to rule out a faulty connection.
  4. Update graphics and audio drivers from the manufacturer's website.
  5. Restart the computer with the HDMI cable already connected.
  6. If using a soundbar or receiver in between, confirm ARC/eARC settings if applicable.
  7. Test another device (like a game console) on the same HDMI input to confirm the display's audio works at all.

Tools and parts

  • None
Replacement HDMI cableSearch: “high speed HDMI cable”

When to call a pro

If audio still doesn't come through after selecting the right output and trying a new cable, and other devices work fine on that input, the laptop's HDMI audio circuitry may need professional diagnosis.

Safety

Generally low risk

Generally low risk for a careful person. Stop if anything looks different from what this guide describes.

Related guides

Operator provides AI-generated troubleshooting information. It can be wrong. For safety-critical, electrical, gas, structural, medical, automotive safety, or other high-risk problems, consult a qualified professional.