1. Go to Control Panel > Programs > Programs and Features > Apple Mobile Device Support (right click and then choose change > choose repair) Let it do it stuffs...once it has been completed...just restart your computer (make sure unplug your apple devices from the computer)
2. Go to Device Manager > Portable Devices (right click then choose Update Driver Software)...wait for it to done it stuffs...then automatically you will see under Universal Serial Bus Controllers > Apple Mobile Device USB Driver
3. Launch your itunes and you should be seeing your apple device is connected.
1. Pannello di controllo > Programmi > Programmi e funzionalità > Apple Mobile Device Support (tasto destro e scegli cambia > poi scegli repair). Lascia che finisce la procedura, scollega il dispositivo Apple dal computer e fai restart del computer.
2. Tasto destro su Questo PC > Gestione > Dispositivi Portatili (tasto destro > Aggiornamento Software Driver) lascia che finisce la procedura e si vedra' automaticamente sotto Controller USB > Apple Mobile Device Driver USB Driver.
3. Lancia iTunes e vedrai correttamente connesso il tuo iPhone.
vedi anche: https://discussions.apple.com/thread/5844669