Hi,
In the Search box type Device Manager.
Touch or click Device Manager (Control Panel).
Touch or click the arrow to the left of Imaging devices.
Touch and hold or right-click Integrated Webcam or USB camera.
Touch or click Uninstall.
Confirm the uninstall process by clicking OK.
Once uninstalled, restart the computer.
Dell Webcam and Dell Webcam Central Software Guide
http://www.dell.com/support/article/sg/en/sgdhs1/sln85507/dell-webcam-and-dell-webcam-central-software-guide?lang=en
If you want to download the driver, I suggest that you could contact the dell official support.
Hope it will be helpful to you
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