Here are some steps to try if your web cam doesn’t seem to work:
Camera is not connected
Perhaps your camera just is not connected to a computer or the USB cable is not fully inserted into the connector.
Cable of your camera broken
Your camera can not work due to a defective wire which connects it to the computer.
Disabled in Device Manager
The device may be working, but the software it may be disabled in the operating system.
Used by another application
If another application uses your camera, it may not be available for other applications.
Denied access to the browser
To webcam work in your browser, you need to provide access to it with the “Allow” option.
Webcams rarely break down, but it is possible if you splashed it with water or sat on it. If this happened, time to buy a new webcam
You do not have a webcam
In this case, you need to buy one. See below for the best selling webcams.