WIDI-Software won't install

Hi there,

first my configuration:

Dell XPS 14

Intel Core i7 (3.Gen) 3537U

Intel Wireless Centrino N 1030

Integrated Intel HD Graphics 4000

and in addition: Nvidia Geforce GT630M

Windows 7 Prof. SP1

Drivers:

- Intel PROSet Wireless Software 16.7.0

- Intel® Iris™ and HD-Driver 15.33.8.64.3345

So here's my problem:

Everytime I try to install the WIDI-Software (Version 4.​2.​24.​0 or 4.​2.​21.​0 ) there's no error warning but at the end of the installation no installed software can be found. While installing the installer creates the WIDI-Icon on my my desktop but in the end it disappears. So what's with that? What can I do?

I also tried the WIDI-Update tool. But it makes no difference. There's no software to be found on my computer after "successful" installation.