Windows installer

My windows modules installer stopped working and was closed after installling NIS.  I completely took NIS off my computer and everthing worked fine.  Tryed to install again and the same problem is coming up along with High CPU usage: windows problem.  What is making NIS cause this problem?

Vista

32 bit

19.5.0.145

Internet Explorer 8  (All started to go wrong after updating to 9 so I removed and went back to 8)

My windows modules installer stopped working and was closed after installling NIS.  I completely took NIS off my computer and everthing worked fine.  Tryed to install again and the same problem is coming up along with High CPU usage: windows problem.  What is making NIS cause this problem?