You may try these methods.
1. Try another USB cord or USB cable.
2. Restrart your computer for a try.
3. Reset or restore your
iPod for a try, this way can fix many general iPod problems.
4. Update your iTunes to the latest version. Plug in your iPod,
then in iTunes in the top left corner click help> run diagnostics. On the box
that comes up, check the last two things. Click next and it should identify your
5. You may try this iPod transfer, it's a nice iTunes alternative that
can help you upload music and video to iPod, I always use it to sync my iPod
when my iTunes can't recognize my iPod, it's easy to use and works pretty
Take your iPod to Apple store, the technical support may help you fix the