Ipod nano 4th gen cant sync

Change the cord. It always work. The cord ran out of power. Try changing the cord.

restore iPod

1. Verify that you have an active Internet connection, because you may need to download new versions of the iTunes and iPod Software.
2. Download and install the latest version of iTunes if necessary.
3. Open iTunes. Connect your iPod to your computer using the USB or FireWire cable that came with your iPod.
4. After a few moments, your iPod will appear in the Source panel in iTunes.
5. Select your iPod in the Source panel. You will see information about your iPod appear in the Summary tab of the main iTunes window.
6. Click Restore.
7. If you are using a Mac, you will be asked to enter an administrator’s name and password.
8. A progress bar will appear on the computer screen, indicating that stage one of the restore process has begun. When this stage is done, iTunes will present one of two messages with instructions specific to the iPod model you are restoring.
   • Disconnect iPod and connect it to iPod Power Adapter (typically applies to older iPod models).
   • Leave iPod connected to computer to complete restore (typically applies newer iPod models).
9. During stage two of the restore process, the iPod displays an Apple logo as well as a progress bar at the bottom of the display. It is critical that the iPod remain connected to the computer or iPod power adapter during this stage.
   Note: The progress bar may be difficult to see, because the backlight on the iPod display may be off.
10. After stage two of the restore process is complete, the iTunes Setup Assistant window will appear. It will ask you to name your iPod and choose your syncing preferences, as it did when you connected your iPod for the first time.

but unfotunately all your previously synced congs will be lost,,, but its ok then, because you can use your ipod again.

I found this article on apples web site I thought it might be helpful

http://support.apple.com/kb/TS3218

hi there, did you try resetting the iPod yet?

you mighht have to format the ipod to mac format

Not all iTunes video can be transferred to iPod, please make sure your video is compatible with iPod. If the video resolution or video bitrate beyond iPod limitation, even though they are mp4 video, you can't upload them to iPod. For example, some iTunes purchased movie are High definition movie, the resolution is too high to play on iPod, you can't sync it to your iPod. For more information about iPod compatible video, you can visit apple official website.
http://www.apple.com/ipodnano/specs.html
Or you may take a look at this step by step direction, it's about how to convert and put video to iPod, it works pretty well for me.
http://www.dvdintoipod.com/rip-dvd-movie-and-convert-video-to-ipod.html
Hope it helps. Contact me if you need further assistance.

If he has his own computer, just plug it into his and open up iTunes, you will be asked if you want to sync the ipod with the this computer, say yes, then click "Erase and Sync."
There ya go!
If you share a computer, then plug it onto your computer, select the ipod in the list to the left in iTunes, then select the "Music" tab and choose which music he wants synced to the iPod.
Hope this helps!

From the apple website:

"If you are experiencing these errors, begin by updating to the latest version of iTunes. When you have the current version of iTunes, try the following:

• Disconnect and reconnect your iPod and then attempt to restore.
• Restart your computer and then attempt to restore your iPod.
• Disable or Enable Disk Use on your iPod and then attempt to restore.
• Try connecting your iPod to a different USB port and then attempt to restore.
• Remove any third-party USB devices you have connected to your computer (it is not necessary to remove your keyboard or mouse).
• If you use Windows, re-register .dll files as described in article iTunes displays -50 error message when syncing iPod on Windows XP
• For Windows users, update or reinstall your Windows USB drivers."

If this doesn't fix it, it might be a logic board issue or hard drive issue.

http://repair-scratched-ipods.blogspot.com

www.huskyipodrepair.com

http://www.apple.com/itunes/download/

first download itunes from here...

in order to sync your ipod you got to have itunes. since the ipod is an apple product you got the use ther software