Start with the simplest fixes first

A webcam that won't work usually fails for one of three reasons: the camera is physically blocked, the software isn't recognizing it, or the device itself has a loose connection. Before you assume the hardware is broken, spend five minutes on the fixes that solve the problem in most cases.

Check whether the lens is actually clear. Dust, a sticker, or a sliding cover can completely block the image. Wipe the lens gently with a soft, dry cloth — the kind you use for eyeglasses works well. If your webcam has a physical privacy shutter, make sure it's open. Then restart your computer entirely, not just the browser or the app. Many webcam problems vanish after a full restart.

Key Takeaways

  • A blocked lens, closed privacy shutter, or loose USB cable causes most webcam failures and takes less than a minute to fix.
  • Restarting your computer clears temporary software conflicts that prevent the operating system from recognizing the camera.
  • Windows and Mac both have built-in tools to check whether the camera is actually connected and working at the system level.
  • If the camera works in one app but not another, the problem is usually app permissions, not the hardware itself.
  • Uninstalling and reinstalling the camera driver solves most cases where the system recognizes the device but the image is frozen or distorted.

Check the physical connection

If your webcam connects by USB, unplug it completely and plug it back in. Wait ten seconds between unplugging and reconnecting — this gives the system time to fully release the device. If you're using a laptop with a built-in camera, you can't unplug it, so skip to the next section.

For USB cameras, try a different USB port on your computer. Some ports deliver power inconsistently, especially on older machines or when many devices are plugged in at once. If you have a USB hub, plug the camera directly into the computer instead — hubs sometimes don't supply enough power. If the camera works in a different port, that port may be failing, but the camera itself is fine.

Verify the camera is enabled in your operating system

On Windows 10 or 11: Open Settings, go to Privacy & Security, then Camera. You'll see a list of apps with permission to use the camera. First, check that Camera access is turned on at the top of the page — if it's off, toggle it on. Then scroll down and make sure the app you're trying to use (Zoom, Teams, your browser) has permission. If an app is listed but shows as off, turn it on.

If the camera doesn't appear in Settings at all, Windows isn't detecting it. Plug it in again, wait 30 seconds, and refresh the Settings page. If it still doesn't show up, move to the driver section below.

On Mac: Open System Settings, go to Privacy & Security, then Camera. You'll see a list of apps that have requested camera access. If the app you need isn't listed, it hasn't asked for permission yet — open the app and it should prompt you. If it's listed but toggled off, turn it on. If you don't see Camera in the Privacy menu at all, your Mac doesn't recognize the device as a camera.

Check the camera driver on Windows

The driver is the software that lets Windows talk to the camera hardware. If Windows recognizes the camera but it won't turn on, or if the image is frozen or distorted, the driver may be outdated or corrupted.

Open Device Manager by right-clicking the Start button and selecting Device Manager. Look for a category called Cameras or Imaging Devices. Click the arrow to expand it. You should see your webcam listed — it might say "USB Camera" or "Integrated Camera" or the manufacturer's name. Right-click it and select Update driver. Choose Search automatically for updated driver software and let Windows search. If an update is found, install it and restart your computer.

If the camera doesn't appear in Device Manager at all, or if it appears with a yellow warning triangle, right-click it and select Uninstall device. Unplug the camera, wait ten seconds, plug it back in, and restart your computer. Windows will reinstall the driver automatically. This solves most cases where the system stopped recognizing the camera.

Restart the camera service on Mac

Mac doesn't use drivers the way Windows does, but the system has a camera service that can get stuck. If your Mac recognizes the camera but it won't turn on, try restarting the service.

Open Activity Monitor (search for it in Spotlight). Look for a process called VDCAssistant or coreaudiod. If you find it, click it and select the X button to quit the process. The system will restart it automatically. Then try opening your camera app again. If the camera still won't work, restart your Mac entirely — this is more reliable than restarting individual services.

Check app permissions and camera settings

If the camera works in one app but not another, the problem is almost always permissions. Open the app that isn't working and look for a settings or preferences menu. Many apps have a camera section where you can select which camera to use and adjust brightness or resolution. Make sure the correct camera is selected — if you have multiple cameras, the app might be trying to use the wrong one.

Then check your operating system permissions again. On Windows, go back to Settings > Privacy & Security > Camera and make sure the app is toggled on. On Mac, go to System Settings > Privacy & Security > Camera and make sure the app is listed and enabled. If the app isn't listed, it hasn't asked for permission yet. Close the app completely, open it again, and it should prompt you to allow camera access.

Some apps also need microphone permission to work properly. Check the Microphone section in Privacy & Security using the same steps.

Disable camera effects and test with a basic app

If the image is frozen, pixelated, or distorted, the problem might be a camera effect or filter that's stuck. Open your camera app's settings and look for options like "effects," "filters," "beauty mode," or "background blur." Turn all of them off and test again. Some effects use a lot of processing power and can cause the image to freeze if your computer is slow.

To test whether the camera hardware itself is working, use the simplest app available. On Windows, open the Camera app that comes built in — search for "Camera" in the Start menu. On Mac, open Photo Booth, which comes with every Mac. If the image works in these basic apps but not in Zoom or Teams, the problem is with that specific app's settings, not your camera.

When to replace the camera

If you've worked through all the steps above and the camera still doesn't work, the hardware itself may be failing. Built-in laptop cameras rarely fail, but external USB cameras can. If the camera doesn't appear in Device Manager or System Information, and you've tried multiple USB ports and a full restart, the device is probably broken and replacement is the next step.

Before you buy a new one, try borrowing a different USB camera and plugging it in. If that camera works, your original camera is faulty. If the borrowed camera also doesn't work, the problem is with your computer's USB ports or system, not the camera.

Frequently Asked Questions

Why does my camera work in Zoom but not in Teams?

Each app manages its own camera settings and permissions separately. Check that Teams has camera permission in your operating system settings, then open Teams settings and look for a Camera option. Make sure the correct camera is selected — Teams might be trying to use a different device. Restart Teams completely and try again.

My camera image is upside down or sideways. How do I fix it?

This is usually a setting in the app, not a hardware problem. Open the app's settings or preferences and look for a Camera, Video, or Display section. Many apps have a rotate or flip option. If you can't find it in the app, check your operating system camera settings — some have a rotation option there. If neither has one, the camera itself may be mounted incorrectly, and you may need to physically rotate it.

The camera works but the image is very dark or very bright. Can I fix it?

Most camera apps have brightness and contrast controls in their settings. Open the app's preferences and look for Camera, Video, or Image settings. Adjust brightness and contrast there. If the app doesn't have these controls, try adjusting the lighting in your room — move closer to a window or add a lamp. If the image is still too dark after adjusting both the app and your lighting, the camera sensor may be failing.

Do I need to uninstall and reinstall the camera driver?

Only if the camera appears in Device Manager with a warning symbol, or if updating the driver didn't work. Uninstalling forces Windows to reinstall the driver from scratch, which fixes corruption that an update might miss. Unplug the camera first, uninstall it in Device Manager, then plug it back in and restart your computer.

My built-in laptop camera stopped working after a Windows update. What should I do?

Updates sometimes change driver compatibility. Restart your computer first — this solves the problem in many cases. If that doesn't work, open Device Manager, find your camera, right-click it, and select Update driver. If Windows can't find an update, uninstall the device, restart your computer, and let Windows reinstall it automatically. If the camera still doesn't work, check your laptop manufacturer's website for a camera driver specific to your model.