I had the same problem and Dell adviced me to reinstall the webcam central software. Worked first time and continues to work.

Thanks Tony.  I'll try that!

Hi dmtorrie,

May I know the operating system installed on your computer?

If your system came with Windows 8, then you would need to uninstall and re-install the Camera app from the Start screen. You can re-install it from 'Windows Store Apps'.

Alternatively, please check if the webcam is detected in Device Manager.

• Press and hold the Windows key and press 'R' key. This will open the run window.
• Type 'devmgmt.msc' without the parenthesis, click on 'Ok'.
• This will open Device manager window.
• Under “Imaging Devices”, you will find the 'Webcam' listed.

Please reply with the findings.