06-20-2015 09:06 AM
Welcome to the Lenovo Community !
Is the webcam being shown in Windows Device Manager under the Imaging Devices ? If it is then right click on the listing and choose uninstall. Reboot your computer and Windows will then reinstall the camera using the driver that is already on your hard drive.
06-21-2015 08:35 AM
If there is no webcam listed in Device Manager or no unknown devices listed then I suspect your webcam is defective. If the webcam and its cabling were working like they should then Windows would be detecting it and prompting to install the drivers.