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Camera shows a green light but no image in Zoom? Black screen in FaceTime? Camera grayed out entirely? These fixes cover macOS Sequoia, Sonoma, and Ventura on all Apple Silicon and Intel MacBooks.
Another app is holding the camera. Quit all apps that use the camera (Zoom, Teams, FaceTime, Photo Booth) — even ones running in the background. Then try the camera again. If that doesn't work, a Terminal command to kill the camera daemon fixes 70% of remaining cases.
MacBook cameras rarely fail at the hardware level — the most common cause is a software or permissions conflict. The FaceTime HD camera (or Center Stage camera on newer models) is managed by a system process called VDCAssistant. When this process gets stuck, the camera appears broken. Here's how to fix it.
Only one app can use the Mac camera at a time. Go to the Apple menu → Force Quit and look for Zoom, Teams, FaceTime, Photo Booth, Skype, Discord, or any other video app — even if minimized. Click their icon in the Dock and press Cmd+Q (not just close the window). Check the menu bar for camera icons too.
System Settings → Privacy & Security → Camera. Make sure the app you're trying to use (Zoom, Teams, Chrome, etc.) has the toggle switched ON. After enabling, you must fully quit and relaunch the app — a permissions change doesn't take effect in a running application.
Open Photo Booth (Applications folder). If the camera works here, the hardware is fine — the issue is with a specific app. If Photo Booth also shows black, the problem is system-level. This is your key diagnostic step.
A full restart (Apple menu → Restart) clears the VDCAssistant process and camera lock state. Many "camera not working" issues resolve with a simple restart because the system clears all process locks on the camera hardware.
Open Terminal (Applications → Utilities → Terminal) and run:
Enter your admin password when prompted. This force-kills the camera process and it restarts automatically. On newer macOS versions (Sonoma+), also run:
Then reopen your camera app. This fixes the "green light, black screen" issue in about 80% of cases.
In Terminal, run:
This lists every process holding the camera. If you see an unexpected app (a browser extension, a menu bar app, a virtual machine), quit it and the camera will free up immediately.
For Zoom: quit the app, then in Finder go to ~/Library/Application Support/zoom.us/ and delete the cache folder. Relaunch. For Teams: quit, navigate to ~/Library/Application Support/Microsoft/Teams/ and delete the Cache folder. These apps cache camera settings that can become corrupted after macOS updates.
Browser camera access is controlled at two levels: macOS system permissions AND browser site permissions. In Chrome: three-dot menu → Settings → Privacy and Security → Site Settings → Camera → check the site is allowed. In Safari: Safari menu → Settings for This Website → Camera → Allow. Both levels must be enabled.
For Apple Silicon (M1, M2, M3, M4): shut down completely, wait 30 seconds, restart. For Intel MacBooks: shut down, hold Shift+Control+Option+Power for 10 seconds, release, restart. The SMC controls hardware component power states including the camera's T1/T2 chip interface on Intel models.
Apple menu → About This Mac → System Report → Camera. If the FaceTime HD Camera appears in the list with a USB or AVB entry, macOS sees the hardware — the problem is software. If the camera doesn't appear at all, there's a hardware fault or ribbon cable issue requiring service.
If System Information doesn't show the camera at all, and the Terminal commands above don't help, the issue is hardware: a damaged ribbon cable connecting the camera to the logic board (common after a drop), a failed T1/T2 chip interface, or a physically damaged camera module. On older Intel MacBooks, the camera ribbon cable is a common wear point. On Apple Silicon models, camera failures are rare unless there's physical damage.
Apple's out-of-warranty camera repair typically runs $200-$400. Third-party options exist for older models.
If macOS can't detect the camera at all, it's a hardware issue. PC Medics of NJ handles MacBook camera repairs — ribbon cable replacement, module swaps, and T2 diagnostics.
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