So here is what you have to do:
- Go to the place you uninstall programs on your computer. For Windows 7 go to start and type in "Uninstall a Program" and hit enter. For Windows 8 on your start menu (the screen with the tiles) start typing "Programs and Features" and click on settings. You should see Programs and Features listed there. Click it.
- You want to search for the following programs and uninstall them. You can do this by right clicking on them and click on uninstall. iTunes, Bonjour, Apple Software Update, Apple Mobile Device Support, and Apple Application Support. Don't worry if you don't have all of these programs just install the ones you do have.
- Reboot your computer
- Download and install iTunes like normal from: http://www.apple.com/itunes/download/
If you are still having issues with iTunes or have any other questions please feel free to contact us, we are here to help!