Test your camera directly in Windows or Mac settings before troubleshooting
The fastest way to check whether your camera works is to open the camera app built into your operating system. On Windows 10 and 11, search for "Camera" in the Start menu and click the Camera app — it will show a live preview if the hardware is working. On Mac, open Photo Booth (in Applications > Utilities) or FaceTime and allow camera access when prompted. If you see a live image of yourself, your camera is functioning at the hardware level.
If the built-in app shows nothing, the problem is usually a driver issue, a physical blockage, or a permission setting — not the camera itself. The next steps depend on which one it is.
Key Takeaways
- Windows Camera app and Mac Photo Booth are the quickest way to confirm your camera hardware is working without installing anything.
- If the built-in app shows a blank screen, check Windows Device Manager or Mac System Report to see whether the camera is recognized by your computer at all.
- Permission settings in Windows Settings or Mac System Preferences often block camera access even when the hardware is fine.
- A physical obstruction — dust, a sticker, or a sliding cover — is a common reason for a black screen that looks like a hardware failure.
Check whether your computer recognizes the camera in Device Manager or System Report
If the camera app shows a black screen or an error, your next step is to confirm that your operating system can see the camera at all. On Windows, right-click the Start button, select Device Manager, and look for "Cameras" in the list. Click the arrow next to it to expand. If you see your camera listed with no warning icon, Windows recognizes it. If there is a yellow exclamation mark or a question mark, the driver is missing or corrupted.
On Mac, click the Apple menu, select About This Mac, then click System Report. Click USB in the left sidebar and look for your camera in the list on the right. If it appears, macOS recognizes the hardware. If it does not appear at all, the camera may not be connected properly or the USB port may be faulty.
If your camera does not appear in either list, restart your computer and check again. A restart often resets the connection. If it still does not appear after a restart, the camera hardware may be damaged or the USB cable (if external) may be loose or defective.
Update or reinstall the camera driver on Windows
A missing or outdated driver is the most common reason a camera shows in Device Manager but does not work in apps. In Device Manager, right-click your camera 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 camera again and select "Uninstall device." Restart your computer. Windows will automatically reinstall the driver on startup. This step clears out corrupted driver files and forces a fresh installation.
If you know the camera manufacturer (Logitech, Microsoft, Dell, or your laptop brand), you can also visit their website, search for your camera model, and read the driver directly. This method is slower but sometimes works when Windows Update does not have the latest version.
Check camera permissions in Windows Settings or Mac System Preferences
Even if your camera is recognized and the driver is up to date, Windows and Mac can block apps from using it. On Windows 10 and 11, open Settings, go to Privacy & Security, then Camera. Make sure the toggle next to "Camera access" is turned on. Below that, you will see a list of apps. Turn on the toggle for any app you want to use the camera with — Zoom, Teams, Discord, or your browser.
On Mac, open System Preferences (or System Settings on newer versions), click Security & Privacy, then select Camera. You will see a list of apps that have requested camera access. Check the box next to any app you want to allow. If the app you want to use is not listed, it means it has never asked for permission. Open that app and try to use the camera — it will prompt you to allow access.
After changing permissions, close and reopen the app. The app may need to restart to recognize the new permission.
Test your microphone separately from your camera
Your camera and microphone are often separate devices, even if they are built into the same laptop. On Windows, open Settings, go to System, then Sound. Scroll down to Input and click "Volume level" or "Test your microphone." Speak normally and watch the blue bar move as you talk. If it moves, your microphone is working. If it does not move, check the Input dropdown above it to make sure the correct microphone is selected.
On Mac, open System Preferences, click Sound, then select the Input tab. You will see a list of input devices. Click your microphone, then speak and watch the input level bar on the right. If the bar moves, your microphone is working. If it does not, try selecting a different input device from the list.
If the microphone is not listed as an option, it may not be recognized by your operating system. Restart your computer and check again. If it still does not appear, the microphone hardware may be faulty or disconnected.
Test your camera in a video call app like Zoom or Teams
The built-in camera and microphone tests confirm hardware is working, but apps like Zoom and Microsoft Teams have their own settings that can block or degrade camera quality. Before joining a meeting, open Zoom or Teams settings and look for Camera or Video settings. You should see a preview of your camera feed. If the preview is blank or shows the wrong camera, click the dropdown next to Camera and select the correct device.
In Zoom, go to Settings > Video and look for the camera dropdown. In Teams, go to Settings > Devices and check the Camera dropdown. Both apps let you test your camera before you join a call. If the preview works but your camera fails during an actual call, the problem is usually a permission issue or the app needs to be restarted.
If the preview shows your camera but the image is dark, blurry, or upside down, check whether there is a physical obstruction over the lens, whether the camera lens needs cleaning, or whether the app has a brightness or rotation setting you can adjust.
Check for physical obstructions and clean the lens
A black screen or very dark image often means something is blocking the lens. Look closely at your camera — on laptops, it is usually a small circle at the top of the screen. Check for dust, a sticker, a sliding cover, or a piece of tape. Some laptops come with a physical privacy shutter that slides over the camera. If yours has one, make sure it is open.
If the lens looks clear, gently clean it with a soft, dry cloth. Do not use water, alcohol, or cleaning spray — these can damage the lens coating. A microfiber cloth (the kind used for glasses) works well. Wipe gently in a circular motion and test the camera again.
If the camera still shows a black screen after cleaning and checking for obstructions, and it does not appear in Device Manager or System Report, the camera hardware is likely faulty and will need to be replaced or repaired.
Frequently Asked Questions
Why does my camera show in Device Manager but not in my video call app?
The app does not have permission to use the camera. Open Windows Settings, go to Privacy & Security > Camera, and make sure the toggle for that specific app is turned on. You may need to restart the app after changing the permission.
My camera works in the Camera app but not in Zoom. What should I do?
Zoom may be using a different camera device or may not have permission. Open Zoom Settings, go to Video, and check the Camera dropdown. If it shows the wrong camera, select the correct one. If permission is the issue, restart Zoom after allowing camera access in Windows or Mac settings.
How do I know if my camera is broken or just needs a driver update?
If the camera does not appear in Device Manager (Windows) or System Report (Mac) at all, the hardware is likely faulty. If it appears but does not work, the driver is usually the problem. Try updating the driver first — it is free and takes a few minutes. If that does not work, the hardware may be damaged.
Can dust or dirt inside my camera be cleaned?
You can clean the outside lens with a soft cloth, but you should not open the camera to clean the inside. If dust is visible inside the lens and cleaning the outside does not help, the camera will need professional service or replacement.
Why is my camera image upside down or sideways?
Some apps have a rotation or flip setting in their video settings. Check your video call app's camera settings for an option to rotate or mirror the image. If the image is upside down in every app, the camera may be mounted upside down in your device — contact the manufacturer for a replacement.