try this, Uninstall all the drivers related to the Web camera from the Device Manager.
Download the driver for Web Camera Application and install it in compatibility mode and check.
Follow these steps to install the Drivers in Compatibility mode:
Locate the executable file(.exe file) for the driver installation program.
Right-click the file and then click Properties.
In the Package Name Properties dialog box, click the Compatibility tab.
Click to select the Run this program in compatibility mode for check box, click Windows Vista in the Run this
program in compatibility mode for list, and then click OK.
Double-click the executable file to start the installation program.