How to Turn On a Laptop Microphone

This guide walks you through enabling the built-in microphone on a Windows or Mac laptop, from hardware switches to system permissions. You’ll need your laptop and, if you’re using an external mic, that device ready to plug in.

What You’ll Need

Your laptop (Windows or macOS)
Any external microphone you plan to use (optional)
Admin access to your user account (to change system settings)

Step-by-Step

Check for a physical mute switch or key. Many laptops have a small switch on the side or a function key (often F4 or F6) that mutes the mic. Look for an icon with a crossed-out microphone. If found, toggle it so the mic is not muted.
Open your system’s sound settings. On Windows, right-click the speaker icon in the taskbar and select “Sound settings.” On macOS, go to System Settings (or System Preferences) and click “Sound.” The exact menu names differ slightly by version.
Select the correct input device. In the Sound settings, find the “Input” section (Windows) or “Input” tab (macOS). Choose your built-in microphone (often labeled “Internal Microphone” or “Realtek High Definition Audio”). If you’re using an external mic, select that instead.
Test the microphone level. Speak into the mic and watch the input level meter. If it moves, the mic is working at the hardware level. If it doesn’t, proceed to the next steps.
Enable microphone access for apps (Windows). Go to Settings > Privacy & Security > Microphone. Turn on “Microphone access” and ensure “Let apps access your microphone” is on. Then check the list of apps below and make sure the app you want to use (like Zoom or Teams) is allowed.
Enable microphone access for apps (macOS). Go to System Settings > Privacy & Security > Microphone. Toggle on the apps you want to grant mic access to. If the app isn’t listed, it hasn’t requested access yet—open the app and try to use the mic, and a prompt will appear.
Check the app’s own settings. In the app you’re using (video call, voice recorder, etc.), go to its settings or preferences and confirm the correct microphone is selected. Some apps have their own mute button—make sure it’s not on.

Common Mistakes

Muting via a function key without noticing. Many users accidentally press the mic mute key and don’t realize it. Always check the keyboard for a mic icon with a slash.
Choosing the wrong input device. If you have multiple mics (internal, USB, Bluetooth), the system might default to one that’s not working. Always manually select the one you intend to use.
App permission denied. Even if the mic works system-wide, an app won’t have access until you grant it in privacy settings. This is the most common reason a mic works in one app but not another.
Forgetting to unplug an external mic. Some laptops automatically switch to an external mic when one is plugged in. If you unplug it, the internal mic may not automatically re-enable—check the input selection.

Tips

Use the built-in troubleshooter (Windows). In Settings > System > Troubleshoot > Other troubleshooters, run the “Recording Audio” troubleshooter. It will automatically detect and fix common issues.
Update your audio drivers. Outdated or corrupt drivers can cause mic issues. On Windows, go to Device Manager, expand “Audio inputs and outputs,” right-click your mic, and select “Update driver.” On macOS, updates come through system updates.
Adjust the input volume. If your mic is too quiet, increase the input volume in Sound settings. If it’s too loud and clipping, lower it.
Close other apps that might be using the mic. Some apps hold exclusive access to the mic, preventing others from using it. Close unused apps that might be using the mic in the background.

Troubleshooting

Mic still not working after following the steps?

Restart your laptop. A simple restart can resolve temporary glitches in the audio system.
Check the privacy settings again. Ensure “Microphone access” is on and your app is allowed. Sometimes a Windows update resets these settings.
Try a different port or adapter. If using an external mic, try a different USB port or a different cable. A loose connection can cause the mic to not be recognized.
Run the hardware test. Some laptops have built-in diagnostics (e.g., Dell SupportAssist, HP PC Hardware Diagnostics). Run a microphone test to see if the hardware is faulty.
If nothing works, the mic hardware might be broken. If you’ve tried all settings and the mic still doesn’t pick up sound, it’s likely a hardware issue. Contact your laptop manufacturer’s support or take it to a repair shop.

Frequently Asked Questions

Why is my laptop microphone not working in Zoom but works in other apps?

This is usually a permission issue. Check that Zoom is allowed to access your microphone in your system’s privacy settings. Also, in Zoom’s own settings, make sure the correct microphone is selected and not muted.

How do I know if my laptop has a built-in microphone?

Most laptops have a small hole near the webcam or on the front edge. You can also check your device’s specifications online or look in the Sound settings for an input device labeled “Internal Microphone.”

Can I use an external microphone with my laptop?

Yes, you can plug in a USB microphone or a 3.5mm jack mic (if your laptop has a combo jack). After plugging it in, select it as your input device in Sound settings.

Why is my microphone picking up too much background noise?

Lower the input volume in Sound settings, or use a noise suppression feature if your app has one (like Krisp in some apps). You can also try moving closer to the mic or using a directional external mic.

My microphone is enabled but sounds very quiet. What can I do?

Increase the input volume in Sound settings. Also, check if there’s a “Microphone Boost” option in the mic’s properties (Windows: Sound settings > Input > Device properties > Additional device properties). Boost it by 10-20 dB if needed.

Do I need to restart my laptop after changing microphone settings?

Usually not. Changes take effect immediately. However, if you’ve updated drivers or after a system update, a restart can help ensure everything is loaded properly.

Sources: Microsoft Support. Menus and buttons can differ slightly by version. Spotted something out of date? Tell us.