Where can i get information about restoring and reparing a Nano - I need a site like this one but for Nano's

My Nano is not starting properly and need a 3rd party tool to attemp a software restore - Nothing appears on the screen but when you press menu and select itunes detects it but there is still no display on the nano and itunes times out waiting for the device. Im sure there must be another way to restore\repair the software on there without using itunes

i would be grateful for any help

L