iTunes has stopped working - Windows 7

I've been running iTunes for ages but recently when I launch iTunes I get the error message "iTunes has stopped working" and then the program closes.

I've checked for solutions and the only thing I've seen is to uninstall then reinstall the Apple Programs, i.e. itunes, Quicktime, Bonjour, Apple Software Updater etc.

When I check the Programs folder I am unable to remove Bonjour but all the others delete successfully.

Having reinstalled everything I run iTunes again but it STILL crashes with the same message.

I've tried looking everywhere but getting no joy, just more and more frustrated.

Can anyone help PLEASE!!!