Before starting the installation, please remove all USB devices (except mouse, keyboard and video converter) to avoid possible conflicts during the installation.
Download the latest "MAGIX video converter" Drivers:

MAGIX Videowandler - Premium
MAGIX Videowandler - Red
MAGIX Videowandler - Black

1. Unzip the entire directory into any folder. 
2. Close your antivirus software.
3. Right-click on the "Setup.exe" file. 
4. Now click "Run as administrator".

If there are already drivers on your PC, first run the "Remove" option and then start driver installation again.