Test your camera in the operating system before troubleshooting

The fastest way to know whether your camera works is to open the camera app built into your operating system. On Windows, search for "Camera" in the Start menu and click the Camera app—if it opens and shows a live feed, your hardware is functioning. On Mac, open Photo Booth (in Applications > Utilities) or FaceTime and allow camera access when prompted. If you see yourself on screen, the camera is working.

If the built-in app shows a live feed, your camera hardware is fine. The problem then lies with a specific program—like Zoom, Teams, or your browser—not with the camera itself. If the built-in app shows nothing or says "No camera found," move to the next section.

Key Takeaways

  • Open your operating system's built-in camera app first; if it shows a live feed, your hardware works and the problem is with a specific program.
  • Check Device Manager on Windows or System Report on Mac to confirm the camera is recognized by your computer at all.
  • Restart the program you are trying to use the camera in, then restart your computer, before assuming the camera is broken.
  • Grant camera permission in your operating system settings and in the individual program; many programs block the camera by default.
  • If the camera still does not work after these steps, the hardware may be faulty or the driver may need updating.

Check whether your computer recognizes the camera in Device Manager or System Report

If the built-in camera app showed nothing, your computer may not be detecting 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 (yellow triangle), Windows recognizes it. If the camera is listed with a warning icon or does not appear at all, the driver may be missing or corrupted.

On Mac, click the Apple menu, select "About This Mac," then click "System Report." In the left sidebar, select "USB" (most webcams connect via USB). Look for your camera in the list on the right. If it appears, macOS recognizes it. If it does not appear, the hardware may not be connected properly or may be faulty.

Restart the program and your computer

Before assuming the camera is broken, close the program you were trying to use it in—Zoom, Teams, Google Meet, or your browser—completely. Do not just minimize it. Then reopen the program and try the camera again. Many programs lock the camera when they close unexpectedly and do not release it until you fully restart them.

If restarting the program does not work, restart your entire computer. A full restart clears temporary software conflicts and resets hardware connections. After your computer boots back up, open the program again and test the camera.

Grant camera permission in your operating system and in the program

Modern operating systems require you to give programs permission to use the camera. On Windows 10 and 11, open Settings, go to "Privacy & Security," then select "Camera." Toggle "Camera access" on, then scroll down and make sure the program you want to use is toggled on in the list below. Some programs appear only after you have tried to use the camera in them once.

On Mac, open System Preferences (or System Settings on newer versions), go to "Security & Privacy," select the "Camera" tab, and look for the program in the list. If it is not there, the program has not requested permission yet. Open the program, try to use the camera, and macOS will prompt you to allow it. Click "Allow."

Some programs also have their own camera settings. In Zoom, for example, open Settings, click "Video," and check that the correct camera is selected in the "Camera" dropdown. If "No Camera" is selected, click the dropdown and choose your camera by name.

Check for physical obstructions and reconnect the camera

If your camera is external (a USB webcam rather than a built-in laptop camera), make sure nothing is blocking the lens—no tape, no dust cover, no sticker. Gently clean the lens with a soft, dry cloth if it looks dusty.

Unplug the USB cable from your computer, wait 10 seconds, and plug it back in. Windows and Mac will re-detect the camera. Open the built-in camera app again to see if it now works. If you are using a USB hub, try plugging the camera directly into a USB port on your computer instead; some hubs do not provide enough power.

Update or reinstall the camera driver on Windows

If Device Manager shows your camera with a warning icon, the driver is likely corrupted or outdated. Right-click the camera in Device Manager and select "Update driver." Choose "Search automatically for updated driver software." Windows will search online and install a newer 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 when it boots. This often fixes driver conflicts that prevent the camera from working.

If you know the camera brand and model, you can also visit the manufacturer's website, read the latest driver, and install it manually. This is more reliable than Windows Update for some older or less common cameras.

When to call a professional or replace the hardware

If the built-in camera app still shows nothing after you have restarted your computer, checked Device Manager or System Report, updated the driver, and reconnected the camera, the hardware is likely faulty. A broken camera sensor or a failed USB connection inside the device cannot be repaired at home.

If your camera is built into a laptop, contact the laptop manufacturer or a repair technician; the camera may need to be replaced by someone with access to the inside of the machine. If your camera is external, it is usually cheaper to buy a new one than to repair it. Most external USB webcams cost between $30 and $100.

Frequently Asked Questions

Why does my camera work in one program but not another?

The program you are trying to use may not have permission to access the camera. Check your operating system's camera permission settings and make sure the program is toggled on. Also check the program's own settings—some programs have a camera dropdown that may be set to "No Camera" by mistake.

My camera shows a black screen instead of a live feed. Is it broken?

Not necessarily. A black screen often means the camera is recognized but the lens is blocked, the lighting is too dark, or the program is not displaying the feed correctly. Check that nothing is covering the lens, try moving to a brighter area, and restart the program. If it still shows black, try the built-in camera app to see if the problem is with that specific program.

How do I know if my camera is a hardware problem or a software problem?

Open your operating system's built-in camera app. If it shows a live feed, the hardware works and the problem is software—either a driver issue or a permission issue with the program you are trying to use. If the built-in app shows nothing, the problem is likely hardware or a missing driver.

Can I test my camera without opening any programs?

Yes. The built-in camera app (Camera on Windows, Photo Booth on Mac) is the simplest test. It requires no setup and will when ready show whether your camera is working. If it works there, you know the hardware is fine.

What if Device Manager says my camera is working but I still see nothing?

The driver may be outdated or conflicting with another program. Try updating the driver through Device Manager, or uninstall it and let Windows reinstall it automatically. Also check that the program you are using has camera permission in your operating system settings.