You can turn on the camera on your Windows computer immediately using the built-in Camera app, or another app that uses it.

Do you use a laptop or desktop computer at work? If so, you may need a webcam from time to time. But what if you do not have one? Or what if your built-in webcam is bad or broken? There are many ...

You can enable the camera on Google Hangouts on a computer or mobile device, though there are system requirements for the desktop version.