İpod nano not seen at explorer and itunes

Flip the iPod Nano's "Hold" switch to "OFF."

The iPod Nano cannot be turn on if the switch is set to "ON."

Reset the iPod Nano. Move the "Hold" switch to "ON" and then "OFF."

Then, press down the "Select" and "Menu" buttons on the Nano. Hold those buttons for about eight seconds.

The Apple logo will then become visible on the iPod Nano. Once this occurs, try turning the iPod Nano on once again.

Connect the iPod Nano to an iPod charger or a computer that is turned on via the iPod Nano's USB cord. Charge the Nano for at least 30 minutes.

Then, try to turn the Nano on.

Update the iPod Nano's software.

Connect the Nano to your computer via the player's USB cable. Open iTunes, and click the iPod Nano's name on the left part of iTunes.

Click the "Summary" option at the top of iTunes. Then, click on the "Check for Updates" button that's positioned in the middle of iTunes.

Follow the instructions that appear inside iTunes in order to install the updates on the Nano.

hope this helps

• Check system requirements. - iPod nano (5th generation) requires the following minimum versions of Windows: either Windows XP (Service Pack 3 or later), Vista or Windows 7. If you have one of these versions of Windows, verify that Windows is fully up to date by downloading and installing software updates from Microsoft. If you have Windows XP with Windows XP Service Pack 1 or Windows XP Service Pack 2, download and install Service Pack 3 using Windows Update.
  
  
• iTunes online? - Confirm that iTunes has been downloaded and installed.
  
  
• AMDS online? - iPod nano requires Apple Mobile Device Support (AMDS), which should be automatically installed with iTunes. To verify whether it is installed, click Start > Control Panel. Open the Add or Remove Programs control panel and verify that Apple Mobile Device Support is visible in the list of currently installed programs. If it is not, remove and reinstall iTunes.
  
  
• Check USB connection. - Disconnect all USB devices from the system with the exception of the iPod nano and any USB keyboard and mouse. Then restart your computer. Verify that you are using a high-powered USB 2.0 port. Test with an alternate iPod USB cable if one is available.
  
  
• AMDS - Re-verify that AMDS is running and installed.
  
  
• iTunes usage - Remove and reinstall iTunes.