When the camera is on, a green indicator light appears beside the camera lens above your screen. You will also see the video feed from your camera in the app's window. To turn off the camera, close the app or turn off the video on your video streaming app.

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Choosing Webcam in Software You don't have to disable your internal webcam before installing the USB webcam. In most programs, you can choose which of the two webcams to use from the software's settings. In Skype, choose 'Tools' and then 'Options,' and click 'Video Options.' Then choose the webcam you want to use from the drop-down list. Similar settings exist in most programs that support webcams, including Google's Voice and Video Chat (which is used for Hangouts) and Microsoft's Live Messenger. Webcam Software If you choose to use only your external webcam from this point forward, remove the software that came with and managed your old webcam and install new software to go with the new webcam.

Click in the top right-hand corner of Windows and click on the 'Search' charm, then type 'Control Panel' and click 'Control Panel' from the search results to launch it. Click 'Programs' and then 'Uninstall a program.' Scroll through the list until you find the old webcam software, select it, then click 'Uninstall.' When the process completes, insert the disc that came with your external webcam or download its software from the manufacturer's website.