Test Your Camera Before You Need It

The fastest way to test your computer camera is to open the camera app that came with your operating system, point it at your face, and watch the live video. On Windows, search for "Camera" in the Start menu and click the app. On Mac, open Launchpad, search for "Photo Booth," and click it. On Linux, open the Activities menu and search for "Cheese." If you see yourself on screen within a few seconds, your camera works.

If nothing appears, or if you see a black screen, your camera may be disabled, blocked by privacy settings, or not connected properly. The sections below walk you through finding the problem and fixing it.

Key Takeaways

  • The built-in camera app on your operating system is the fastest way to test whether your camera hardware is working.
  • A black screen usually means your camera is disabled in settings, blocked by another app, or covered by a physical shutter.
  • Windows and Mac both have privacy settings that can block camera access to specific apps, even if the camera itself works.
  • If your camera works in one app but not another, the problem is almost always app-level permissions, not the camera hardware.
  • Restarting your computer fixes most camera problems because it clears software locks and resets connections.

Use Your Operating System's Built-In Camera App

Windows 10 and 11: Click the Start button (Windows logo) in the bottom left corner. Type "Camera" and press Enter. The Camera app opens in full screen. You should see a live preview of what your camera sees. If you see yourself, your camera is working. If the screen is black or says "No camera found," move to the troubleshooting section below.

Mac: Click the Launchpad icon in your dock (it looks like a grid of dots), or press F4. Type "Photo Booth" and press Enter. Photo Booth opens and shows a live preview. You will see yourself in the center window. If the preview is black, your camera is not responding.

Linux: Open the Activities menu (top left) or press the Super key. Type "Cheese" and press Enter. Cheese is the default camera app on most Linux distributions. It shows a live preview of your camera feed. If you see video, the camera is working.

Check Camera Privacy Settings on Windows

Windows has a master camera permission that blocks all apps from using your camera unless you turn it on. Open the Start menu and type "Camera privacy settings." Click "Camera privacy and security settings." Look for the toggle that says "Camera access." If it is off (gray), click it to turn it on.

Below that toggle, you will see a list of apps. Each app has its own toggle. If the master toggle is on but a specific app's toggle is off, that app cannot use your camera even though the camera itself works. Turn on the toggle for any app you want to use your camera with—for example, Zoom, Google Meet, or Discord.

After you change these settings, close the app you were testing and open it again. The app may ask for permission the first time. Click "Allow" or "Yes" when it does.

Check Camera Privacy Settings on Mac

Mac stores camera permissions in System Settings. Click the Apple menu (top left) and select "System Settings." Click "Privacy and Security" in the left sidebar. Click "Camera." You will see a list of apps that have requested camera access.

If an app is listed but does not have a checkmark next to it, the app is blocked. Click the app name and look for a checkbox or toggle. Turn it on. If the app you want to use is not listed at all, open that app and try to use the camera feature. Mac will prompt you to allow camera access. Click "Allow."

If you do not see your camera app in the list, your camera may not be recognized by the system. Restart your Mac (Apple menu > Restart) and try again.

Restart Your Computer and Check Physical Connections

Restart your computer completely. Many camera problems are caused by software locks or driver issues that clear when you restart. After your computer boots back up, open your camera app again and test it.

While your computer is restarting, check the physical parts of your camera. If you have an external USB camera, make sure the cable is plugged firmly into a USB port on your computer. Try a different USB port if one does not work. If you have a built-in camera (on a laptop), check whether there is a physical shutter or cover over the lens. Some laptops have a small sliding cover—make sure it is open.

Also look for a small light next to your camera lens. When the camera is in use, this light usually turns on. If the light never turns on even after you restart, the camera hardware may not be working.

Test Your Camera in a Video Call App

If your camera works in the built-in camera app but not in Zoom, Google Meet, Discord, or another video app, the problem is almost always app permissions, not your camera hardware. Go back to your privacy settings (Windows: "Camera privacy settings"; Mac: System Settings > Privacy and Security > Camera) and make sure the video app has permission to use your camera.

Some apps also have their own camera settings inside the app. Open the app, look for Settings or Preferences (usually in a menu or gear icon), and search for "Camera" or "Video." Make sure the camera is not disabled there. If the app shows a list of cameras, make sure you have selected the correct one—some computers have more than one camera.

Close the app completely (not just minimized) and open it again. The app may ask for permission a second time. Click "Allow."

What to Do If Your Camera Still Does Not Work

If your camera does not work in the built-in camera app and you have checked privacy settings and restarted your computer, the problem may be a driver issue or hardware failure. A driver is software that tells your operating system how to use your camera.

On Windows, open Device Manager by right-clicking the Start button and selecting "Device Manager." Look for "Cameras" in the list and click the arrow next to it. If you see your camera listed with a yellow warning triangle or exclamation mark, right-click it and select "Update driver." Windows will search for the latest driver and install it. Restart your computer after the driver updates.

On Mac, drivers usually update automatically through System Updates. Click the Apple menu and select "System Settings." Click "General" and then "Software Update." If an update is available, click "Update Now" and restart when prompted.

If updating the driver does not fix the problem, or if your camera is not listed in Device Manager at all, your camera hardware may be damaged or disconnected internally. Contact the manufacturer of your computer or camera for support.

Frequently Asked Questions

Why is my camera showing a black screen even though the app opened?

A black screen usually means the app does not have permission to use your camera, or your camera is disabled in BIOS (a system setting that runs before Windows starts). Check your privacy settings first. If the camera has permission but still shows black, restart your computer. If it is still black after restart, the camera hardware may not be responding.

How do I know if my camera is being used by another app?

On Windows, open Settings > Privacy and Security > Camera. Look for "Camera in use" at the top—it will show which app is currently using the camera. On Mac, a small dot appears in the menu bar (top right) when any app is using the camera. Close the app that is using the camera, then try your test app again.

Can I test my camera without opening an app?

No, you need an app to see what your camera sees. The built-in camera apps (Camera on Windows, Photo Booth on Mac, Cheese on Linux) are the simplest way. You can also test in a video call app like Zoom or Google Meet by starting a test call, but the built-in apps are faster.

What if my external USB camera is not recognized at all?

Try plugging it into a different USB port on your computer. Some ports are faster or more stable than others. If it still does not appear, restart your computer with the camera plugged in. On Windows, open Device Manager and look for any device with a warning symbol—it may be your camera with a driver problem. Right-click it and select "Update driver."

Is it safe to test my camera by opening the camera app?

Yes, opening the built-in camera app is completely safe. The app only shows you what your camera sees—it does not record, upload, or save anything unless you tell it to. You are not connected to the internet when you use the basic camera app.