Is your computer suddenly silent? Whether you’re on Windows 10, Windows 11, or a Mac, a “no sound” problem can be frustrating — but it’s almost always fixable without calling a technician. This step-by-step guide walks you through the most common causes and proven fixes to restore audio on your PC or Mac in minutes.
Why Is There No Sound on My Computer?
Before jumping into fixes, it helps to understand why your computer might have lost audio. The most common reasons include muted or low volume settings, the wrong playback device selected, outdated or corrupted audio drivers, a hardware connection problem, or a third-party app (like Zoom or Discord) that has hijacked your default audio device.
How to Fix No Sound on Windows 10 and Windows 11
Step 1: Check Volume and Mute Settings
This sounds obvious, but it is the number-one cause of “no sound” complaints. Look at the system tray in the bottom-right corner of your screen and click the speaker icon. Make sure the volume slider is not at zero and the mute icon is not active. Also check the physical volume buttons on your speakers or keyboard.
Step 2: Select the Correct Audio Output Device
Windows sometimes switches your default audio output to the wrong device — especially after a Windows Update or when you connect a monitor via HDMI. To fix this, right-click the speaker icon in the system tray and choose Open Sound Settings. Under Output, use the dropdown to select your correct speakers or headphones. If you recently connected an HDMI display, make sure you haven’t accidentally set it as the audio output.
Step 3: Run the Windows Audio Troubleshooter
Windows has a built-in audio troubleshooter that can automatically detect and fix common sound problems. Go to Settings → System → Troubleshoot → Other troubleshooters, then click Run next to “Playing Audio.” The tool will scan for issues and apply fixes. This resolves many driver-related and service-related audio problems automatically.
Step 4: Update or Reinstall Your Audio Drivers
Outdated or corrupted sound drivers are a leading cause of audio failure. Open Device Manager (right-click Start → Device Manager), expand Sound, video and game controllers, and right-click your audio device. Choose Update driver → Search automatically for drivers. If that doesn’t work, try selecting Uninstall device, restarting your PC, and letting Windows reinstall the driver fresh.
Step 5: Restart the Windows Audio Service
Sometimes the Windows Audio service crashes silently in the background. Press Windows + R, type services.msc, and press Enter. Scroll down to Windows Audio, right-click it, and choose Restart. Also check that the startup type is set to Automatic. Repeat this for Windows Audio Endpoint Builder.
Step 6: Check for App-Specific Audio Hijacking
Apps like Zoom, Discord, and some games can take exclusive control of your audio device, preventing other apps from producing sound. Close all open communication apps completely, then test your audio again. You can also right-click the speaker icon → Open Volume Mixer to see which apps are outputting audio and whether any are muted individually.
How to Fix No Sound on a Mac
If you’re on a Mac and getting no sound, here are the most effective fixes to try.
Check Sound Output Settings on Mac
Go to Apple Menu → System Settings → Sound → Output. Make sure the correct output device is selected (built-in speakers, headphones, or your external device). Move the output volume slider to the right and confirm the Mute checkbox is not ticked.
Restart the Core Audio Process on Mac
Open Activity Monitor (search with Spotlight using Cmd+Space), search for coreaudiod, select it, and click the Force Quit button (X icon). macOS will automatically restart the audio daemon, which often instantly restores sound.
Update macOS for Audio Bug Fixes
Apple frequently patches audio bugs in macOS updates. Go to System Settings → General → Software Update and install any available updates. After updating, restart your Mac and test the sound again.
Quick Checklist: Fix No Sound in 60 Seconds
- Check that speakers or headphones are plugged in and powered on
- Verify the volume is not muted or set to zero
- Confirm the correct output device is selected in Sound Settings
- Run the Windows Audio Troubleshooter
- Update or reinstall your audio drivers
- Restart the Windows Audio service
- Close apps like Zoom or Discord that may be hijacking audio
- On Mac: restart the coreaudiod process in Activity Monitor
Frequently Asked Questions (FAQ)
Why does my computer have no sound after a Windows Update?
Windows Updates can sometimes overwrite or conflict with audio drivers, or change your default output device. After an update, go to Device Manager and update your audio drivers manually, then check that your output device is still correctly selected in Sound Settings.
Why is there no sound from my HDMI connection?
HDMI carries both video and audio signals. When you connect an HDMI monitor or TV, Windows may automatically switch your audio output to that display. Go to Sound Settings and make sure your preferred playback device (speakers or headphones) is set as the default.
How do I fix no sound in a specific app only?
Right-click the speaker icon in the system tray and open the Volume Mixer. Check if the specific app is muted or has its volume set very low. Also check the app’s own audio settings — many apps like Spotify, Chrome, and video players have their own volume controls.
Can a virus cause no sound on my computer?
While rare, malware can corrupt audio drivers or disable services. If you’ve tried all the above steps and still have no sound, run a full malware scan using Windows Defender or a trusted antivirus tool to rule this out.
Still having trouble? Leave a comment below describing your issue or visit our Tech Resources page for more troubleshooting guides. Our team at Fixing IT Issues Simplified is here to help you get your computer working again — fast and for free.