The fastest way to check if your webcam works
Open your operating system's built-in camera app. On Windows 10 or 11, search for "Camera" in the Start menu and click the app—if your webcam is working, you will see a live video feed of yourself within a few seconds. On Mac, open Photo Booth (in Applications > Utilities) or use the FaceTime app. On Linux, open Cheese or Snapshot. If you see a live image, your hardware is working.
If the app opens but shows a black screen or "no camera found" message, your webcam is either disabled, not recognized by your system, or has a driver problem. The sections below walk you through each possibility in order.
Key Takeaways
- The Camera app (Windows), Photo Booth (Mac), or Cheese (Linux) will show you when ready whether your webcam is sending video to your computer.
- A black screen usually means the camera is disabled in your system settings or another app has locked access to it.
- Windows and Mac both have privacy settings that block webcam access—check those before assuming the hardware is broken.
- If your webcam worked before and stopped, a driver update or a disconnected cable is the most common cause.
- Restarting your computer fixes most webcam problems and should always be your first step after checking the app.
Check your privacy and permission settings
Both Windows and Mac let you control which apps can use your webcam. If an app cannot see the camera even though it is plugged in, the permission is usually blocked.
On Windows 10 or 11: Open Settings, go to Privacy & Security, then Camera. You will see a list of apps. Make sure the toggle at the top ("Camera access") is turned on. Then scroll down and turn on the toggle next to any app you want to use the webcam with—for example, Zoom, Teams, or your browser. If you do not see an app listed, it has not asked for permission yet; open the app and it should prompt you.
On Mac: Open System Settings, go to Privacy & Security, then Camera. You will see a list of apps that have requested access. Click the lock icon at the bottom left to unlock the settings, then check the box next to any app you want to allow. If an app is not listed, it has not asked yet; open the app and it will prompt you.
Restart your computer and reconnect the camera
Restart your computer completely—do not just put it to sleep. Many webcam problems (driver conflicts, software locks, USB recognition issues) clear themselves after a restart.
If your webcam is external and plugged in via USB, unplug it, wait 10 seconds, and plug it back in. Your computer will re-detect it. If it is built into your laptop, you cannot unplug it, but restarting still helps.
After the restart, open the Camera app again and check for a live feed. If you still see nothing, move to the next section.
Update or reinstall your webcam driver
Your operating system uses a driver—a piece of software that lets Windows, Mac, or Linux talk to your webcam hardware. If the driver is missing, outdated, or corrupted, the system will not recognize the camera.
On Windows: Right-click the Start button, open Device Manager, and look for "Cameras" in the list. Click the arrow next to it to expand. If you see your webcam listed, right-click it and select "Update driver." Choose "Search automatically for updated driver software." If no camera appears under Cameras, look under "Other devices" for an unknown device with a yellow warning icon—that is usually your unrecognized webcam. Right-click it and select "Update driver" the same way.
On Mac: Drivers usually update automatically through System Updates. Go to System Settings, General, Software Update, and install any available updates. Restart after installing.
On Linux: Open your terminal and run lsusb (for external cameras) or lspci (for built-in cameras) to see if your camera is recognized. If it appears, your driver is likely working. If it does not appear, your camera may not be compatible with your Linux distribution.
Check for physical obstructions and hardware problems
Look at your webcam lens. If it is covered by a sticker, lens cap, or privacy shutter, remove it. Wipe the lens gently with a soft, dry cloth—dust or smudges can make the image very dark or blurry, which might look like the camera is not working.
If your webcam is external, check that the USB cable is fully inserted into both the camera and your computer. Try a different USB port on your computer—some ports may not provide enough power or may be faulty. If you have another USB device (like a mouse or keyboard), plug it into the same port to confirm the port works.
If your laptop has a built-in camera and it still does not work after restarting and updating drivers, the hardware may be damaged. This usually requires professional repair.
Test your webcam in a video call app
Sometimes the Camera app works but video call software like Zoom, Teams, or Google Meet does not recognize the camera. This usually means the app does not have permission (covered above) or the app needs to be restarted.
Close the video call app completely, then reopen it. Go to the app's settings and look for a Camera or Video section. Select your webcam from the dropdown menu if more than one is listed. Start a test call or preview—most apps have a "Start a test meeting" or "Preview" button. If you see yourself, the camera is working in that app.
If the app still does not see the camera, uninstall and reinstall the app. This clears out old permission settings and forces the app to ask for camera access again.
When to call a professional
If you have worked through all the steps above and still see no video feed from the Camera app, the webcam hardware is likely faulty. Built-in laptop cameras usually require a technician to replace. External USB cameras can straightforward be replaced—they are inexpensive and plug in when ready.
If your computer is under warranty, contact the manufacturer's support line. If it is out of warranty, a local computer repair shop can diagnose the problem and replace the camera if needed. Bring your computer and be ready to describe what you have already tried.
Frequently Asked Questions
Why does my webcam work in one app but not another?
The app that does not see the camera probably does not have permission. Check your privacy settings (Windows: Settings > Privacy & Security > Camera; Mac: System Settings > Privacy & Security > Camera) and make sure the app is listed and toggled on. If it is not listed, open the app and it should prompt you to grant permission.
My webcam was working yesterday and now it is black. What happened?
Restart your computer first—this fixes most sudden failures. If that does not work, check that no other app is using the camera (close video call apps, browsers with video chat open, and any recording software). If the Camera app still shows black after a restart, a driver update may have caused the problem; try rolling back the driver in Device Manager (Windows) or reinstalling the app.
Can I test my webcam without opening any apps?
Not easily. The Camera app is the simplest way because it is built in and requires no setup. Some browsers let you test a camera by visiting a website that requests camera permission, but the Camera app is faster and more reliable for a basic test.
Is my webcam broken if it shows a very dark or blurry image?
Not necessarily. Check that the lens is clean and not covered by a sticker or privacy shutter. Make sure you are in a well-lit room—webcams need light to produce a clear image. If the image is still dark or blurry after cleaning and moving to a brighter spot, the lens may be damaged, but this is less common than a dirty lens.
Do I need to uninstall my old webcam driver before installing a new one?
No. When you update the driver through Device Manager (Windows) or System Updates (Mac), the old version is replaced automatically. You only need to uninstall if you are removing the camera entirely or if an update fails and you want to start fresh.