Lost the driver of my web cam,there is no model no on the web cam

Copy this site and paste it in your web browser address bar and hit ENTER.

http://www.download32.com/webcam-diagnostics-d35065.html

to download the Camera Diagnostic Tool and run it to check out your camera and/or problem.

Be sure the camera is plugged into the USB port before running the program.

As you run the program, write down the info about the camera so you will know what model and who manufactured the camera you have
attached so you can get the proper software drivers for it.
Hope this helps. Bud