I was researching what could be going on with the iPod Nano, and have a few recommendations. First I recommend that you turn it off by holding the Sleep/Wake button for about 5 seconds or so. Turn it back on the same way and test again.
If that doesnt quite cut the mustard, then I would reset the iPod. From our article How to reset iPod here: http://support.apple.com/kb/HT1320.
Press and hold the Sleep/Wake button and Volume Down button simultaneously for at least eight seconds or until the Apple logo appears. You may need to repeat this step.
If the above step did not work, try connecting iPod to a power adapter and plug the power adapter into an electrical outlet, or connect iPod to your computer. Make sure the computer is turned on and isn't set to go to sleep. Try resetting the iPod while it is connected to power.
And the last thing to try would be a restore on the iPod using this article Restoring iPod to factory settings here:http://support.apple.com/kb/HT1339
How to restore iPod
- Verify that you have an active Internet connection, because you may need to download new versions of the iTunes and iPod Software.
- Download and install the latest version of iTunes if necessary.
- Open iTunes. Connect your iPod to your computer using the USB or FireWire cable that came with your iPod.
- After a few moments, your iPod will appear in the Source panel in iTunes.
- Select your iPod in the Source panel. You will see information about your iPod appear in the Summary tab of the main iTunes window.
- Click Restore.
- If you are using a Mac, you will be asked to enter an administrator’s name and password.
- 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).
- 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.
- 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.
If this is a software issue, then the steps outlined above will fix it.