The problem could possibly be the installer & not the drivers
If you have the option you could download the drivers in ZIP format and unzip to a easy-to-remember folder. Then, in device manager, right-click the device for your webcam (it may be an unrecognised device) and 'Update Driver
software...' then click 'Browse my computer for driver software...' and point it in the direction of the folder you just created.
This should now go through the installation of the driver without using the Install package.
Hope this helps