Start with one controlled test
Open the Webcam Test and start the camera. If you see a preview, the device can work in this browser. Keep that result separate from whether Zoom or Teams has permission to use it. Stop the preview before switching to another app.
Permission denied: check both layers
Use the site controls beside your browser’s address bar to review camera permission for MyLaptopTools. Then check camera access in your operating system’s privacy settings. Managed work devices may restrict access centrally; ask your administrator rather than changing unrelated security settings.
Camera unavailable: inspect the device
Open the physical privacy shutter. Check any keyboard camera-toggle key and reconnect an external camera directly to the laptop. Close apps that may be holding the camera. If several cameras are attached, choose the intended one in the test or meeting app. Restart the app after reconnecting hardware.
Preview works, meeting does not
Look at the selected input in the meeting app and confirm its own preview. A browser test and an installed app may use different devices. If the preview is dark, face a window or lamp instead of putting a bright light behind you. Resolution alone cannot tell you whether your face is well lit.
Finish the pre-call check
Run the Microphone Test, then the Speaker Test. Join the actual meeting preview early enough to change devices. If the camera still fails in both the browser and your operating system’s camera app, investigate the driver or hardware with the device manufacturer’s guidance.