Most webcams use the USB port to connect to the PC, so check if your USB cable is properly plugged.For build-in webcams this steps does of course not apply. Also try connecting your webcam directly to your PC instead of through a USB hub (if you are using one).
But don’t forget to check if you need to manually activate your webam.
In most cases the webcam will be automatically activated by software that can use the webcam, but for some computer brands it is necessary to press a certain key-combination to activate the webcam (it will be a Function key, either with Alt or Ctrl or the Fn key, but check the laptop manual for details).
In Windows Live Messenger for example, you might get webcam error 0x8a70013, indicating a problem with the webcam device.
One of the very first step is of course to check your webcam connection.
Most chat and meeting software have a configuration option to select the video source for the webcam feature.
If you have multiple devices that qualify for video, you might need to select your webcam device as the source for the webcam feature in that program.If that does not work you can use a third party uninstaller.After uninstalling the software, restart your PC and then reinstall the webcam software. Depending on the software, you might need to unplug your webcam during the software installation.See a live view of current conditions at The Summit via our mountain webcams and Washington State Department of Transportation cameras.The power at the top of Edelweiss is intermittent at this time causing periods (sometimes extended) of camera outage. The top cam may drop in and out of service while we work to implement a stable power solution.Adjusting the focus through the ring can solve that problem.