- Reset the iOS device. Nothing will be lost
Reset iOS device: Hold down the On/Off button and the Home button at the same time for at
least ten seconds, until the Apple logo appears.
- Reboot the computer
- Try another cable
- Try USB port
- Look at the dock connector on the iPod. Look for abnormalities like bent or corroded contacts, cracked or broken plastic.
- Make an appointment at the Genus Bar of an Apple store.