My Ipod only works when connected to computer, once i disconnect immediately turns off. whats could be the problem?

Connect your iPod to the primary computer you use it with (the first one iPod synced with), and open iTunes. When you disconnect iPod from the computer, it will no longer be locked. If you can't unlock iPod using either [the code or connecting it to the computer you use to manage its songs]. . . you can restore your iPod to factory settings using iPod Updater. Please note that this will erase all data on your iPod. Afterwards, you can add your music and data back to your iPod.

Install iTunes
Before you connect your iPod shuffle to your Mac or PC computer or use it, you must install the latest iTunes software.
2. Connect and Set Up your iPod shuffle Charge your battery by connecting it to an Apple iPod Power Adapter or connect your iPod to a high-power USB port —one that's located directly on your computer—to ensure that your computer charges your iPod battery. (If your computer doesn't seem to recognize your connected iPod , wait about 30 minutes to allow the iPod battery to charge before going further.)

• Charging your iPod battery through a computer or optional power adapter

3. Fill your iPod shuffle and iTunes with Music Once you finish the set up, iTunes will open. It will then either:

• Automatically start filling your iPod with music from your iTunes library (if you set iTunes to automatically update your iPod)

OR

• Allow you to pick and choose what music, audiobooks, and podcasts to add, if you opted to manually manage music on your iPod.

To manually add content, simply drag any file from your iTunes library or playlist to your iPod icon in the iTunes Source list. If you're using iTunes for the very first time, you'll need to add some music to iTunes first, such as songs from your own CDs or music already on your hard drive.

• Adding my music to iTunes
• Adding my iTunes music to my iPod
• Using your iPod as a disk drive for music and other files.
  Note: Syncing music to iPod is a one way street. You cannot copy music from an iPod to a computer unless you enable your iPod as a hard disk first and then copy music files to its disk volume.

4. Disconnect your iPod shuffle Once you've got your music, audiobooks, and other files on your iPod, you're ready to enjoy it.

• If you see an “OK to Disconnect” message on your iPod, simply disconnect it from your computer.
• If you see a “Do Not Disconnect” message, click the eject icon that appears next to your iPod icon in the iTunes Source list and then disconnect your iPod from your computer when you see the “OK to Disconnect” message.
• Disconnecting my iPod shuffle

5. Play your iPod shuffle Now you’re ready to enjoy your iPod.

To resolve this issue, you will need to restore your iPod to factory settings This means any data (music, movies, contacts, etc.) will be erased and the iPod brought back to it's factory settings (like the day you got it).
To do this, follow the steps below:
1. Make sure your iPod is disconnected and powered off. If it's not already, hold down the power button until the "Slide to Power Off" message is displayed and swipe to turn off.
2. Connect the USB end of the data cable to your computer, do not connect the other end just yet.
3. Connect the other end of the data cable to the iPod and immediately press down

This means that your iPod is in the Recover Mode. The ony fix to this is a Restore, which is basically erasing EVERYTHING from the iPod and redoing it.
Try this:
1. Make sure you have the latest version of iTunes on the computer. If not, you can download it from "http://www.apple.com/itunes/download/"
2. Disconnect your iPod from the computer if it is connected. Turn off your iPod (make sure you get the thing that says "Slide to Power Off"). Once done, press and hold the Home button(the one below the screen), and connect it to the computer. DO NOT LET GO OF THE BUTTON UNTIL YOU GET A RESPONSE FROM ITUNES
3. If all goes well, this is what iTunes will display: iTunes has detected an iPod in recovery mode..
4. Restore the iPod by following the onscreen instructions.
5. Once done, it shoulld be working fine. :D

here's the website: http://support.apple.com/manuals/#ipod
you can download the user manual from there.

I found the solution to this problem:

To get your iPod Nano 3rd Generation (4GB video) to be recognized by your computer, you will need to manually get it into "Disk Mode" here's how:

1. Verify that it has a full charge, if not, you need to either charge the iPod before continuing or connect it to a high-powered USB port, or simply connect it to the Power Adapter that plugs into an electrical outlet. (just not connected to your computer)
2. Toggle the Hold switch on and off once. (Set it to Hold, and then turn it off again. Just slide back and forth.)
3. Press and hold the Menu and Select (center) buttons at the same time for at least 6 seconds until the Apple logo appears.
4. When the Apple logo appears, release the Menu and Select (center) buttons and immediately press and hold the Select (center) and the Play/Pause buttons until the ‘Disk Mode’ screen appears.
5. Disconnect your iPod from the power adapter and connect it to your computer;
6. Now the screen on the iPod will change and say "Do not disconnect" and should be recognized by your computer.

I hope this helps you; I had a hard time finding a solution and thought I'd share the wealth once my stress was relieved.

you have to restart your iPod. press the middle/center button and the menu button for a few minutes

Hi! I think there is a virus in your iPod. Check your ipod with an antivirus when it is in diskmode. Then you need to open itunes and restore your ipod and will restore it to factory settings.

And if it doesn't work then Toggle the Hold switch on and off. (Set it to Hold, then turn it off again.)
Press and hold the Menu and Select buttons for at least 6 seconds until the Apple logo appears.
When the Apple logo appears, release the Menu and Select buttons and immediately press and hold the Select and the Play/Pause buttons until the Disk Mode screen appears.

Connect the iPod to your computer; the screen on the iPod will change and say "Do not disconnect.

After doing this open latest version of itunes and then restore your ipod to factory settings by selecting it from itunes.

Someone posted a similar problem on another thread and included a solution that worked for him/her. It worked for me as well, when I had the problem. For me, it was not an iTunes or iPod problem but a Windows Vista problem. I don't know what OS your son is running. I've copied the step-by-step instructions from the other thread into this thread for you. Give it a shot - good luck!

1. Before manually placing the iPod into Disk Mode - verify that it has a charge, if not you need to either charge iPod before continuing or connect it to power. Either connect it to a high-powered USB port, or connect the iPod to the Power Adapter and pluf that into an electrical outlet..
2. Toggle the Hold switch on and off. (Set it to Hold, then turn it off again. Just slide back and forth. )
3. Press and hold the Menu and Select buttons for at least 6 seconds until the Apple logo appears.
4. When the Apple logo appears, release the Menu and Select buttons and immediately press and hold the Select and the Play/Pause buttons until the Disk Mode screen appears.
5. Disconnect iPod from the power adapter and connect it to your computer; the screen on the iPod will change and say "Do not disconnect"