Please do the following:
Search for Device manager on your PC -> Universal serial bus devices -> iPod (your device) -> Properties -> Change settings -> Update driver (or Roll back driver) -> Browse -> show drivers on my PC -> Select usb mass storage device (or Apple ipod usb driver).
If the solution above did not help, refer to this troubleshooting guide for iPod corruption errors:
If the issue persists, please email our Support Team at email@example.com with the log files. Here's how to generate them: