Xboxstat.exe is listed in your startup item list as
Microsoft Xbox 360 controller accessory
Hold the windows key and R
Type msconfig
Click the start up tab
Look for Microsoft Xbox 360 controller accessory
Uncheck the box, restart your computer
xboxstat.exe. should not appear the next time you start.
Hope this helps nice contoller, my son lent it to my wife for Skyrim.