I accidentally deleted some of the intel widi software in Uninstall and cannot seem to get it back.

I was trying to get it up and running after not using for long time.  I have a Dell Studio 1569 (Late 2009) that came with Intel widi.  I started to trouble shoot because I got an error" This platform is not compatible with Intel WiDi".  Anyway, long story short,  I can't seem to get the software to download.  I thought I found the right thing to download and it ran for over an our installing 1 of 2 updates and I finally forced it closed because it wasn't' responding.  Now I'm not sure what I should download.  Any assistance would be appreciated.