It is so mild by comparison but I think I killed my ipod. 3500 songs to replace.
If your iPod is the kind with a click wheel, this is what I've done to reset mine when it won't come on.
--Make sure the "hold" switch on your iPod is OFF (grey-colored area) and not ON (orange). (I actually toggle it back and forth a few times just to be sure)
--Then hold both the "Menu" and center button (select) simultaneously for about 6 to 8 seconds. (Make sure when pressing the "select" button that you aren't touching any part of the click wheel.) If nothing happens, repeat this step.
This should restart the iPod without losing content. Hopefully.
"Let's be independent together." Dr. Hermey DDS