Check whether your speakers or headphones are plugged in and turned on

The most common reason a computer produces no sound is that nothing is connected to listen to it, or what is connected is switched off. Before you troubleshoot software, verify the physical setup: speakers should be plugged into a power outlet and have their volume knob or power button turned on, and headphones should be fully inserted into the headphone jack or paired via Bluetooth if wireless.

Look at the back or sides of your computer tower or monitor for audio ports — usually a green jack for speakers or a pink jack for a microphone. If you are using a laptop, the headphone jack is typically on the side. Push the connector in firmly until you hear or feel a click. A loose connection will produce no sound even if everything else is configured correctly. If you are using wireless speakers or headphones, make sure they are charged and within range of your computer.

Key Takeaways

  • Physical connections come first: check that speakers are powered on and headphones are fully plugged in before changing any settings.
  • Windows and Mac both have a volume control in the system tray or menu bar that can be muted or turned all the way down.
  • Your audio driver — the software that lets your operating system talk to your sound hardware — may need to be updated or reinstalled.
  • Some applications have their own volume controls that override the system volume, so check the settings inside the program you are using.
  • If you have tried all basic steps, restarting your computer often fixes temporary audio problems without requiring further diagnosis.

Unmute the system volume and check the volume level

Both Windows and Mac computers have a master volume control that can be muted or set to zero, silencing all sound even when speakers are working. On Windows, look for a speaker icon in the bottom right corner of the taskbar (the area next to the clock). Click it to see the volume slider. If a red X or mute symbol appears over the speaker icon, click it to unmute. Drag the slider to the right to raise the volume.

On Mac, click the speaker icon in the top right corner of the menu bar. A volume slider will appear. If you see "Muted" at the bottom, click the speaker icon again to unmute. Adjust the slider upward to increase volume. If the slider is already at maximum and you still hear nothing, the problem lies elsewhere.

Verify that the correct audio output device is selected

Computers with multiple audio ports or wireless speakers can send sound to the wrong device by default. On Windows, right-click the speaker icon in the taskbar and select "Open Volume mixer" or "Sound settings." Look for a section labeled "Output" or "Playback devices." You will see a list of connected devices — speakers, headphones, HDMI outputs, or Bluetooth devices. The one with a green checkmark is currently active. If you want to use different speakers or headphones, click on that device and select "Set as default."

On Mac, go to System Preferences (or System Settings on newer versions), then Sound, then Output. Select the device you want to use from the list. If you do not see the device you expect, it may not be connected properly or may need to be paired via Bluetooth first. Once you select a new output device, sound should route to it when ready.

Update or reinstall your audio driver

An audio driver is the software that allows your operating system to communicate with your sound hardware. If the driver is outdated, corrupted, or missing, your computer will not produce sound even if everything is physically connected. On Windows, right-click the Start button and select Device Manager. Look for "Sound, video and game controllers" and expand it. You should see your audio device listed — often something like "Realtek High Definition Audio" or "Intel Display Audio." Right-click it and select "Update driver." Choose "Search automatically for updated driver software." Windows will search online and install the latest version if one is available.

If updating does not work, right-click the device again and select "Uninstall device." Restart your computer. Windows will automatically reinstall the driver when it boots up. On Mac, audio drivers are built into the operating system and update automatically, so this step is usually not necessary — but restarting the computer often fixes driver-related sound problems.

Check process-level volume and audio settings

Some programs have their own volume controls that are separate from the system volume. If you are watching a video, playing a game, or using a music player, look for a volume slider or mute button within that process. Even if your system volume is at maximum, an app set to mute or zero volume will produce no sound. Many web browsers also have independent volume controls — right-click a video or audio player in your browser and look for a mute or volume option.

Some applications also let you choose which audio device to use. Open the process's settings or preferences menu and look for an "Audio," "Sound," or "Output" section. Make sure it is set to the device you want to use, not a device that is not connected. This is especially common in video conferencing software, music production programs, and gaming applications.

Restart your computer

A restart clears temporary software problems that can interfere with audio. Close all open programs, then restart your computer by clicking the Start button (Windows) or Apple menu (Mac) and selecting Restart. Wait for the computer to fully boot up, then test your audio again. Many sound problems that seem complex are actually caused by a temporary glitch that a restart will fix.

If sound returns after a restart but disappears again later, the problem may be a specific program or driver that loads at startup. In that case, try the troubleshooting steps above to identify which process or driver is causing the issue.

Test audio with a different process or website

Before you assume your hardware is broken, test sound in a different program. If you were trying to get sound from a video player, try playing audio through a web browser or a music process instead. If sound works in one program but not another, the problem is with that specific process, not your hardware or drivers. Try restarting the process, checking its audio settings, or reinstalling it.

If you have no sound in any program, the problem is system-wide and likely involves your driver, volume settings, or physical connections — all of which are covered in the sections above.

Frequently Asked Questions

Why does my computer have sound in some programs but not others?

Each program can have its own volume control and audio device selection. Check the settings inside the program that has no sound — look for an audio, sound, or output option. The program may be muted, set to zero volume, or routed to a device that is not connected. If the program is a web browser, right-click the audio or video player and check for mute or volume controls there.

How do I know if my audio driver needs updating?

Open Device Manager on Windows (right-click Start and select it), expand "Sound, video and game controllers," and look for your audio device. If it has a yellow warning triangle or exclamation mark next to it, the driver has a problem. Even without a warning, you can right-click the device and select "Update driver" to check for newer versions. On Mac, audio drivers update automatically with system updates.

Can I use Bluetooth speakers if my computer has no audio jack?

Yes. Turn on your Bluetooth speaker and put it in pairing mode (usually by holding a button for a few seconds). On Windows, go to Settings, then Devices, then Bluetooth and other devices, and click "Add device." On Mac, go to System Preferences, then Bluetooth, and click "Set Up New Device." Select your speaker from the list. Once paired, select it as your audio output device in Sound settings.

What should I do if restarting and updating my driver did not fix the sound?

Check Device Manager again to see if your audio device is still listed and has no warning symbol. If the device is missing or marked as unknown, your hardware may not be recognized. Try unplugging any USB devices you do not need, as they can sometimes interfere. If the problem persists, your audio hardware may be damaged and may need professional repair or replacement.