Cannot restore or recover ipod Classic 80gb I have an ipod Classic 80gb.   It is currently stuck on the apple screen.  I am unable to recover or restore the ipod.  It is not recognized by windows as either a ipod or a mass storage device.   When I plug it into my PC nothing happens.   

It just sits there with the apple logo on the screen.  None of the buttons respond with the exception of a reset.  (toggle hold switch -> hold center + menu for 6 seconds.)  A reset will cause the screen to go blank for a few seconds.  

Nothing else I have found seems to work.  

Let me know if you have any ideas
You can try to diagnose the problem with the diagnostic mode.

To enter the diagnostic mode, press the folowing key when the apple logo appears after a reset :

iPod 1G, 2G et 3G, press the keys for 5 seconds : 


"back"
"next"
"select"


iPod 4G, 5G, mini et nano,  press the keys for 5 seconds :


"back"
"select"


In the diagnotic mode, you can navigate in the menus with the back/next keys and launch a bunch of test.