Fix No Sound Through DisplayPort in Windows 11

You plug your monitor into your PC with a DisplayPort cable, the picture appears perfectly, and then you notice the problem: there is no sound. The speakers built into your monitor stay silent, your headphones plugged into the monitor’s audio jack do nothing, and the volume icon in the Windows 11 taskbar looks perfectly normal. It is a frustrating issue, and it is more common than most people expect.

DisplayPort carries both video and audio in a single cable. When everything works, Windows detects the monitor as an audio output device, and sound flows through the cable to the display’s speakers or headphone jack. When something breaks, the video still works because it uses a separate part of the signal, while the audio path fails silently. The cause is rarely a broken cable. In most cases it is a wrong default playback device, an outdated or corrupted graphics driver, a disabled audio service, a monitor setting that mutes the input, or a quirk introduced by a recent Windows update.

This guide walks through the fixes in a sensible order, starting with the quickest checks and moving toward more involved solutions. Work through them one at a time and test your sound after each method. Most people find the answer within the first five or six steps.

Before You Start: Quick Checks

Before changing any settings, rule out the simple causes. These take less than two minutes and solve a surprising number of cases.

• Check the monitor itself. Make sure the monitor’s volume is turned up and not muted. Many monitors have their own on-screen display (OSD) menu with a separate volume control, and some default to zero.
• Confirm the monitor has speakers or an audio jack. Not every monitor includes speakers. If yours has no speakers and no 3.5 mm headphone output, DisplayPort audio has nowhere to go. Check the specifications on the manufacturer’s website.
• Reseat the cable. Unplug the DisplayPort cable from both ends, wait a few seconds, and plug it back in firmly. DisplayPort connectors have a latch, so listen for the click.
• Restart your PC. A restart clears temporary glitches in the audio and graphics stack.
• Test another source. If you have a second device, such as a laptop or console, connect it to the same monitor. If sound works there, the monitor and cable are fine and the issue is on your PC.

Method 1: Select the Correct Playback Device

The most common reason for silence is that Windows is sending audio to the wrong device. When you connect a monitor, Windows adds it to the list of outputs, but it does not always make it the default.

1. Right-click the speaker icon in the taskbar and choose Sound settings.
2. Under Output, open the dropdown labeled Choose where to play sound.
3. Look for an entry that names your monitor or says something like “NVIDIA High Definition Audio,” “AMD High Definition Audio Device,” or “Intel Display Audio.” Select it.
4. Play a video or a test sound and check whether audio comes through.

If the monitor does not appear in the list, scroll down to Advanced and select More sound settings. In the Playback tab, right-click an empty area and make sure both Show Disabled Devices and Show Disconnected Devices are ticked. If your monitor appears and is disabled, right-click it and choose Enable, then right-click again and choose Set as Default Device.

This single step resolves the issue for a large share of users, especially after connecting a new monitor or switching between several displays.

Method 2: Run the Windows Audio Troubleshooter

Windows 11 includes a built-in troubleshooter that can detect and repair common audio problems, including disabled devices and misconfigured services.

1. Open Settings by pressing Windows + I.
2. Go to System > Troubleshoot > Other troubleshooters.
3. Find Audio and click Run.
4. Select your monitor or the DisplayPort output when prompted and follow the instructions.

The troubleshooter may apply a fix automatically or suggest steps such as disabling audio enhancements. It is not always successful, but it costs nothing to try and sometimes catches problems that are hard to spot manually.

Method 3: Update the Graphics Driver

DisplayPort audio is delivered through your graphics card, not your motherboard’s sound chip. That means the graphics driver is directly responsible for the audio signal, and an outdated or damaged driver is a frequent culprit.

Using Device Manager:

1. Press Windows + X and select Device Manager.
2. Expand Display adapters.
3. Right-click your graphics card and choose Update driver.
4. Select Search automatically for drivers and follow the prompts.

Using the manufacturer’s tools (recommended):

Windows Update often provides older driver versions. For the best results, download the latest driver directly from the source:

• NVIDIA: Use the NVIDIA app or download from nvidia.com.
• AMD: Use AMD Software: Adrenalin Edition or download from amd.com.
• Intel: Use the Intel Driver & Support Assistant or download from intel.com.

During installation, choose the option for a clean installation if one is offered, because this removes leftover settings that can cause conflicts. Make sure the installer includes the HD Audio driver component, since some custom installs let you skip it. If the HD Audio driver is not installed, the monitor will never appear as an audio device.

Method 4: Reinstall the High Definition Audio Driver

Sometimes the audio component of the graphics driver becomes corrupted even when the display driver works fine. Reinstalling it forces Windows to rebuild the audio endpoint for your monitor.

1. Open Device Manager.
2. Expand Sound, video and game controllers.
3. Find the entry that matches your graphics card, such as NVIDIA High Definition Audio, AMD High Definition Audio Device, or Intel(R) Display Audio.
4. Right-click it and choose Uninstall device. If a checkbox offers to delete the driver software, tick it.
5. Restart your PC. Windows will reinstall the driver automatically on boot.

After the restart, return to the sound settings and check that your monitor appears as an output option again.

Method 5: Restart the Windows Audio Services

If the services that manage sound have stopped or hung, no audio device will work properly. Restarting them is quick and harmless.

1. Press Windows + R, type services.msc, and press Enter.
2. Locate Windows Audio, right-click it, and choose Restart.
3. Do the same for Windows Audio Endpoint Builder.
4. Confirm that both services have the Startup type set to Automatic. Double-click each service to check.

If you see an error while restarting Windows Audio Endpoint Builder, restart your PC instead, since the services depend on each other.

Method 6: Disable Audio Enhancements and Exclusive Mode

Audio enhancements and exclusive mode can interfere with HDMI and DisplayPort audio, particularly with certain monitor models.

1. Open Sound settings and select More sound settings.
2. In the Playback tab, double-click your monitor’s audio device.
3. On the Advanced tab, untick both options under Exclusive Mode.
4. Try changing the Default Format to a different value, such as 16 bit, 48000 Hz (DVD Quality). Some monitors only support specific formats, and an unsupported setting results in silence.
5. If an Enhancements tab appears, tick Disable all enhancements.
6. Click Apply and test again.

The sample rate adjustment in particular fixes many cases where the monitor shows up correctly but produces no sound.

Method 7: Check Your Monitor’s Settings

Even when Windows sends audio correctly, the monitor must be ready to receive it. Open the monitor’s OSD menu using the physical buttons or joystick, and look for the following:

• Volume or audio settings, to confirm the volume is above zero and mute is off.
• Audio source or input, because some monitors let you choose between the DisplayPort audio and a separate analog audio input. If the source is set to analog line-in, DisplayPort audio will be ignored.
• DisplayPort version, since a few older monitors offer a DisplayPort 1.1, 1.2, or 1.4 setting. Switching to a different version can restore audio on some models.
• Factory reset, which clears any odd configuration. Use this as a last resort within this method.

If you use a monitor with a headphone jack, remember that some models mute the built-in speakers when headphones are detected, and a faulty jack sensor can wrongly report that headphones are plugged in.

Method 8: Replace the Cable or Adapter

If you connect through an adapter, such as DisplayPort to HDMI or DisplayPort to DVI, audio support depends on the adapter. DVI does not carry audio at all, so a DisplayPort to DVI adapter will never produce sound. Passive DisplayPort to HDMI adapters generally pass audio, but cheap or damaged ones may not.

Try a different DisplayPort cable, ideally a certified one that supports the version your monitor uses (DisplayPort 1.2 or higher is recommended for modern displays). Avoid very long cables, since signal quality drops over distance and can cause audio dropouts even when video appears fine. Also check whether you are using a docking station or KVM switch, as these often block or alter audio signals. Connect directly to the graphics card as a test.

Method 9: Check the Audio Format and Sample Rate Conflicts With Multiple Monitors

If you use multiple monitors, Windows may reassign outputs each time you plug or unplug a display, or when the PC wakes from sleep. To stabilize this:

1. Open Sound settings and set your monitor as the default output manually.
2. If you use apps like Spotify, Chrome, or a video game, scroll to Volume mixer in Sound settings and make sure each app’s output device is set to Default or to your monitor.
3. Avoid hot-plugging displays when possible, and restart the audio services if the output vanishes after sleep.

Method 10: Roll Back or Update Windows

If the problem started right after a Windows update or a driver update, rolling back may restore sound.

Roll back a driver:

1. In Device Manager, double-click your graphics card or the HD audio device.
2. Open the Driver tab and click Roll Back Driver if the button is available.

Uninstall a recent update:

1. Go to Settings > Windows Update > Update history.
2. Select Uninstall updates and remove the most recent one if the timing matches the start of the problem.

On the other hand, if you have been postponing updates, install all pending Windows updates, since Microsoft regularly ships fixes for audio and display issues. Also check for a BIOS or chipset update from your motherboard or laptop manufacturer, particularly for laptops with hybrid graphics.

Conclusion

No sound through DisplayPort in Windows 11 looks alarming, but it almost always has a straightforward cause. Start with the basics: check the monitor volume, confirm it has speakers, and select the right playback device in Windows. If that does not help, move on to updating or reinstalling the graphics and HD audio drivers, restarting the audio services, and adjusting the audio format. Monitor settings, cables, and adapters deserve a look too, since a single wrong option in the OSD or a DVI adapter can silently block audio.

If you have tried everything and sound still does not play, test the monitor with another computer. This tells you whether the fault lies with the monitor’s audio hardware or with your PC. A monitor that stays silent on every device may simply have defective speakers, in which case a warranty claim or a pair of external speakers is the practical fix.

Frequently Asked Questions

1. Does DisplayPort support audio?

Yes. DisplayPort carries both video and audio in the same cable, and it supports multichannel digital audio on modern versions. For sound to work, your graphics card must output audio over DisplayPort and your monitor must have speakers or an audio output jack.

2. Why does my monitor not appear in the Windows 11 sound output list?

This usually means the HD audio driver for your graphics card is missing, disabled, or corrupted, or the monitor has no audio hardware. Reinstall the graphics driver with the audio component included, enable disabled devices in the Playback tab, and check that your monitor supports audio.

3. Why does sound stop working after my PC wakes from sleep or the monitor turns off?

When a monitor powers down or goes into standby, Windows may treat its audio device as disconnected and switch to another output. Setting your monitor as the default device again usually fixes it. Updating the graphics driver, disabling exclusive mode, and keeping Windows updated help prevent the problem from recurring.

4. Can a DisplayPort to HDMI adapter cause no sound?

Yes. Low-quality or faulty adapters may pass video but not audio, and DisplayPort to DVI adapters cannot carry audio at all. Use a good-quality active or passive DisplayPort to HDMI adapter that explicitly lists audio support, or connect with a standard DisplayPort cable if your monitor allows it.