How to reinstall youcam 4?

I accidentally uninstalled my youcam 4 from my lenovo c340, how can i reinstall it

1. Insert the Youcam installation disk into your optical drive. The Youcam installation software will automatically open.
2. Enter your product code when prompted to do so by the installation software.
3. Select a directory in which to install Youcam on your hard drive. Allow the installation process to complete.