Was getting messages flashing up when I loaded my pc up about apple sync notifier or something like that not working, my techno dinosaur husband said I needed to uninstall anything apple. So I did 
(which was really stupid looking back)and itunes is not working properly on my pc now.
Get the message "Apple application support not found, please uninstall itunes then reinstall"
But worried if I do this that we will lose all purchased and other music we loaded onto it.
Can anyone help please? What do I need to do to sort it?