Solution : Apple Mobile Device failed to start , On iTunes , on Win 7/32Bit/64Bit And Win 8

Solution : Apple Mobile Device failed to start , on Win 7/32Bit/64Bit And Win 8

bunch of people have this error message which appears during installation or updates of iTunes .

so the solution is like these :

1- Un-install iTunes 
2- Un-install Apple Mobile support
3- Un-install Apple Software Update
4- Un-install Bonjour which comes with apple softwares 
* un-install all of them from : Control Panel --> Programs And Features 

after un-installing all of these programs , restart your Pc or Laptop  , then , download iTunes again from apple official web-site , here is the link :
https://www.apple.com/itunes/

after that install iTunes normally , And that's it , the problem is solved , Congratulation :-)