You sit down to work or game, and the monitor is on, the picture is crisp, but the speakers are dead silent. No audio from built-in monitor speakers is a frustratingly common problem—and it’s almost always fixable without a technician or a new purchase. In this guide, you’ll work through a logical sequence of checks and fixes, from loose cables to hidden software settings, and have your sound back in minutes.
Check Physical Connections First
A loose or damaged cable is the number one cause of silent monitor speakers. Start with the power cable: if the monitor isn’t getting power, its speakers can’t work. Look for a power LED on the monitor bezel or button; if it’s off, try a different wall outlet or a known working power cable.
Next, inspect the audio source connection. Most modern monitors rely on HDMI or DisplayPort to carry both video and audio. Verify that the cable is fully seated in both the monitor and the computer port. If you’re using a separate audio cable (3.5 mm aux), make sure it’s plugged into the correct “audio out” on the PC and “audio in” on the monitor. A bent or frayed cable can cause intermittent sound—swap it with a spare to rule out damage.
Finally, physically turn up the volume using the monitor’s onboard buttons. Some monitors have a physical mute button or a volume rocker that can be accidentally pressed. Check the OSD (on-screen display) for a mute icon, and increase the volume to at least 50% before moving on.
Checking the HDMI cable seated firmly in the monitor’s input port.
Verify System Sound Settings
If the physical connections are solid, the next culprit is your computer’s audio output settings. The monitor might not be set as the default playback device.
Set the Monitor as Default Playback Device
- Windows 10/11: Right-click the speaker icon in the taskbar, select Sound settings, then choose Sound Control Panel (top right). Under the Playback tab, look for your monitor’s name (e.g., “DELL S2721QS” or “Generic PnP Monitor”). If it’s not listed, right-click in the empty area and check Show Disabled Devices. Right-click the monitor entry and select Set as Default Device.
- macOS: Open System Settings → Sound → Output and select your monitor from the list.
Adjust Volume Levels
Even after setting the correct device, the volume slider might be very low or muted. Check both the system volume (taskbar) and the in-app volume (e.g., YouTube player, game settings). Some applications have independent volume controls that can override the system.
Disable Audio Enhancements
Windows audio enhancements can interfere with monitor speakers. In the Sound Control Panel, double-click your monitor’s playback device, go to the Enhancements tab, and check Disable all enhancements. Apply and test.
Update or Reinstall Audio Drivers
Outdated or corrupted audio drivers are a common reason for sound to drop out unexpectedly. This applies to both the monitor’s driver (if it uses a dedicated driver) and the PC’s audio chipset driver.
- Identify your monitor’s model number (usually on the back label) and visit the manufacturer’s support page. Download the latest audio driver if one is available.
- Open Device Manager (right-click Start → Device Manager). Expand Sound, video and game controllers. Right-click the entry for your monitor or the motherboard audio (e.g., Realtek High Definition Audio) and select Uninstall device. Check Delete the driver software for this device if prompted.
- Restart your computer. Windows will automatically reinstall a generic driver. Then run the downloaded driver installer if you have one.
Updating the audio driver from the device manager on a Windows PC.
Examine Monitor’s On-Screen Menu
Many monitors allow you to disable the internal speakers entirely through their OSD—a surprisingly common oversight. Navigate the monitor’s menu (usually via a joystick or buttons on the back or bottom).
- Look for a section labelled Audio, Sound, or Speaker.
- Ensure Internal Speaker is set to On or Enable.
- If you find a Reset option for audio settings, use it to restore factory defaults. This can clear any corrupt configuration.
Some monitors also have a separate Audio Input setting. If you’re using HDMI, select the corresponding HDMI input as the audio source. If you’re using DisplayPort, choose that.
Test with a Different Device
To isolate whether the problem is with the monitor or the computer, connect the monitor to a different audio source. For example:
- Plug a game console, laptop, or smartphone into the monitor’s HDMI port (using a USB-C to HDMI adapter if needed).
- If the monitor speakers work with the other device, the issue is on your original computer—likely a driver or setting problem.
- If they remain silent, the monitor’s speakers may be faulty, or the audio input circuit is damaged. At that point, consider using external speakers or a soundbar connected via the monitor’s audio-out jack.
Connecting a laptop to the monitor to test if the built-in speakers produce sound.
Check HDMI or DisplayPort Audio Transmission
Not all cables or ports support audio. HDMI and DisplayPort carry audio, but older versions or cheap cables may have intermittent audio channels. Use a certified cable (HDMI Premium High Speed or DisplayPort 1.4 or higher) for reliable audio.
Also, verify that your graphics card or motherboard’s HDMI/DisplayPort output supports audio. Most modern GPUs do, but older integrated graphics may require a separate audio driver. In Device Manager, look under Sound, video and game controllers for an entry like “AMD High Definition Audio Device” or “NVIDIA High Definition Audio” — if missing, the audio channel may not be active.
Advanced Troubleshooting
If basic steps don’t restore sound, a few deeper checks can help.
Run the Windows Audio Troubleshooter
- Go to Settings → System → Sound → Troubleshoot common sound problems.
- Follow the prompts. The troubleshooter will automatically detect muted devices, disabled enhancements, or driver issues. It’s surprisingly effective for restoring audio.
Check for Windows Updates
Outdated OS builds can cause driver conflicts. Go to Settings → Windows Update → Check for updates. Install any pending updates, especially driver or quality updates, and restart.
Adjust Registry Settings (Advanced Users Only)
Warning: Incorrect registry edits can destabilise your system. Back up the registry before making changes.
- Press Win + R, type
regedit, and press Enter. - Navigate to
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\MMDevices\Audio\Render. - Look for subkeys related to your monitor. If you see a DWORD named DisableAudio set to 1, change it to 0.
- Restart the computer.
Contact Manufacturer Support
If none of the above works, the monitor’s internal speaker module may have failed. Check the warranty status and contact the manufacturer’s support for a replacement or repair. Official support pages often have specific troubleshooting guides for your model.
Frequently Asked Questions
Why is there no sound from my monitor speakers after a Windows update? Windows updates can reset audio drivers or default devices. Re-set your monitor as the default playback device and check the enhancements tab. Also, reinstall the audio driver from Device Manager if needed.
Can a faulty HDMI cable cause no sound? Yes. HDMI cables carry audio, and a damaged or low-quality cable can drop the audio channel. Try a different certified cable, especially if you’re using a long or thin cable.
My monitor has a headphone jack but no internal speakers. Can I get sound? Some monitors are designed only for external audio output. If your monitor lacks built-in speakers, you’ll need to connect headphones or powered speakers to the monitor’s audio-out jack, or use a separate audio system.
How do I know if my monitor speakers are broken? Connect the monitor to a different device (e.g., a game console). If the speakers still don’t produce sound, the internal speakers are likely defective. You can also test by gently placing your ear near the speaker grille while audio is playing—if you hear a faint hiss or static, the speaker is receiving power but may be blown.
Conclusion
Silent monitor speakers are almost always a quick fix—a loose cable, a wrong setting, or a muted volume. By systematically checking physical connections, system sound settings, monitor OSD menus, and drivers, you can resolve the issue in minutes without spending a cent. If you’ve worked through all the steps and still have no sound, the monitor’s internal speakers may need professional repair or replacement. In the meantime, a pair of external speakers or a decent headset will keep your audio flowing.
For a cleaner workspace while you troubleshoot, consider using a monitor riser to organise cables and improve airflow—keeping your desk tidy can prevent accidental cable disconnections. And if you’re managing multiple monitors, a good cable management tray helps keep audio and video cables from tangling.
