How to test a webcam on a PC
Plug the webcam into a USB port on the PC itself, then open the Windows Camera app or an online webcam test. If a live picture appears, it works. Desktop PCs have no built-in camera, so the webcam must be connected first.
Test My WebcamConnect the webcam properly
Use a USB port directly on the PC, preferably on the back. Avoid unpowered USB hubs and front-panel ports with long cables, which often cause dropouts or low frame rates.
Quickest way: test your webcam online
Open the webcam test on this site and press "Test My Webcam".
When your browser asks for permission, choose Allow. Within a second or two you should see yourself in the live preview.
Check the results: camera name, resolution and the frame rate your camera actually delivers. If the picture is dark, blurry or choppy, the test tells you what to change.
Test with the Windows Camera app
Open Start, type Camera and open the app. If you see an error, open Device Manager and check that the webcam appears under Cameras.
Check the frame rate and resolution
A 1080p webcam should show 1920 × 1080 and close to 30 FPS in good light. Lower values usually mean poor lighting, a busy USB port or another app using the camera.