Hard Reset APPLE iPod Classic 2nd Generation

First of all, plug in your iPod to the PC and then open iTunes.
Select your iPod from the left menu in iTunes.
You have to click the Restore button in iTunes.
* You can now do back up your files, just if you want.
Then click Restore to confirm information about this procedure.
ITunes should download, prepare and restore the software on your iPod.
In order to finish operation choose "Set up as a new iPod".
Type in the new name for your iPod.
Good job! The factory reset is done.