Start with the simplest checks first

If your PC is producing no sound, the problem is usually one of five things: the volume is muted or turned all the way down, your speakers are unplugged or powered off, the wrong audio device is selected, a cable is loose, or a driver needs updating. Before you dig into settings, spend two minutes on the physical checks—they solve the problem about half the time.

Look at your speakers or headphones. If they're external, make sure they're plugged into the audio jack (usually a green port on the back of your PC, or a USB port if they're USB speakers). If they're powered speakers, check that the power cable is connected and the power switch is on. Look for a small light on the speaker itself—if there's no light, it's not getting power. If you're using headphones, unplug them and plug them back in firmly; a loose connection is a common culprit.

Next, check your keyboard or monitor. Many keyboards and monitors have their own volume controls. Look for buttons labeled with a speaker icon or +/− symbols. Turn the volume up if it's low. If your monitor has built-in speakers, make sure the monitor's volume isn't muted.

Key Takeaways

  • Check that speakers are plugged in and powered on, and that headphones are inserted fully into the audio jack.
  • Open Volume mixer in Windows and confirm your speakers are not muted and the volume slider is not at zero.
  • Right-click the speaker icon in the system tray and select "Open Volume mixer" to see which audio device is set as default.
  • Update or reinstall your audio driver through Device Manager if sound still does not work after checking volume and connections.
  • Restart your PC after making any changes, as Windows sometimes needs a reboot to recognize audio devices.

Check the Windows volume mixer

Open the Volume mixer to see whether Windows itself has muted your audio or turned the volume down. Right-click the speaker icon in the bottom right corner of your taskbar (the system tray). Select "Open Volume mixer" or "Volume mixer settings" depending on your Windows version.

In the Volume mixer window, look at the main volume slider at the top. If it's all the way to the left (zero), drag it to the right to raise the volume. Below that, you'll see a list of apps and their individual volumes. Make sure the app you're trying to use—your web browser, music player, or game—is not muted. Look for a speaker icon with a line through it next to the app name; if you see one, click it to unmute.

If you don't see a Volume mixer option when you right-click the speaker icon, open the Settings app instead. Go to System > Sound and scroll down to "Volume mixer." You'll see the same controls there.

Select the correct audio output device

Your PC may have multiple audio devices connected—built-in speakers, external speakers, headphones, a monitor with speakers, or a USB audio interface. Windows picks one as the default, but sometimes it picks the wrong one, or the device you want is disconnected.

Right-click the speaker icon in the system tray and select "Open Sound settings" (or go to Settings > System > Sound). Under "Output," you'll see a dropdown menu that says "Choose your output device." Click it and look at the list. You should see your speakers or headphones listed. Select the one you want to use. If the device you want is not in the list, it may not be plugged in or powered on—check the physical connection first.

If you see a device in the list but it's grayed out or shows a red X, Windows has detected it but it's not responding. Unplug it, wait five seconds, and plug it back in. Then refresh the list by clicking elsewhere and coming back to the dropdown.

Update or reinstall your audio driver

Your audio driver is the software that lets Windows talk to your speakers. If the driver is outdated, corrupted, or missing, Windows won't be able to produce sound even if everything else is correct.

Open Device Manager by right-clicking the Start button and selecting "Device Manager." Look for a category called "Sound, video and game controllers" and click the arrow next to it to expand it. You should see your audio device listed—it might say "Realtek High Definition Audio," "Intel Display Audio," or something similar. Right-click it and select "Update driver." Choose "Search automatically for updated driver software." Windows will check for a newer version and install it if one is found.

If updating doesn't work, try uninstalling the driver and letting Windows reinstall it. Right-click the audio device again and select "Uninstall device." Check the box that says "Delete the driver software for this device" if it appears. Click Uninstall. Restart your PC. When Windows starts up, it will automatically detect the audio device and reinstall the driver.

Check for hardware problems with a test tone

Windows has a built-in tool to test your audio. Open Settings and go to System > Sound. Scroll down to "Advanced" and click "Volume mixer." At the bottom of that window, under "Advanced," you should see "App volume and device preferences." Click it. Look for an app that produces sound—your web browser or a music player—and make sure its output device is set to your speakers, not "System default" or a disconnected device.

If you want to test whether your speakers work at all, open Settings > System > Sound and scroll to "Output." Under your selected speaker device, you should see a "Test your speakers" button. Click it. You should hear a short tone. If you hear nothing, the speaker itself may be broken, or the connection is still loose.

Restart your PC and check for Windows updates

Sometimes Windows needs a restart to recognize audio devices or explore driver updates. Save your work and restart your PC. After it boots back up, try playing sound again.

While you're at it, check for Windows updates. Open Settings and go to Update & Security > Windows Update. Click "Check for updates." If updates are available, install them and restart if prompted. Audio driver updates sometimes come through Windows Update, and installing them can fix sound problems.

Disable audio enhancements if sound is distorted

If you can hear sound but it's crackling, popping, or distorted, the problem might be audio enhancements. These are extra effects Windows applies to sound, and they sometimes cause problems with certain speakers or headphones.

Right-click the speaker icon in the system tray and select "Open Sound settings." Scroll down and click "Advanced" or "App volume and device preferences." Find your audio device and click it. Look for an option called "Enhancements" or "Advanced options." If you see a list of enhancements (like "Bass Boost" or "Virtual Surround"), uncheck all of them. Click explore and test your sound again.

Frequently Asked Questions

Why does only one app have no sound while others work fine?

The app itself may have its volume muted, or it may be set to output to a different device. Open Volume mixer, find the app in the list, and check that it's not muted and that its output device matches your speakers. Some apps also have their own volume controls in their settings menu.

My headphones work but my speakers don't. What should I check?

Your speakers may not be powered on, or Windows may have them set as a disabled device. Check the power switch on the speakers and the physical cable connection. Then open Sound settings and confirm your speakers are listed under "Output" and set as the default device.

I updated my driver but still have no sound. What's next?

Restart your PC after a driver update—Windows sometimes needs a reboot to fully explore the change. If sound still doesn't work, try uninstalling the driver completely and letting Windows reinstall it automatically. If that fails, your audio hardware may be failing and may need professional repair.

Can a virus cause no sound on my PC?

Rarely. Malware usually doesn't disable audio. If you suspect a virus, run a full scan with Windows Defender (built into Windows) or another antivirus tool. More often, no sound is a driver, connection, or settings problem.

My PC has no audio jack. How do I connect speakers?

Modern PCs often use USB speakers or Bluetooth speakers instead of a 3.5mm audio jack. Plug a USB speaker into any USB port, or pair a Bluetooth speaker by going to Settings > Devices > Bluetooth & other devices and clicking "Add device." Windows should detect it automatically.