I have a used iPod Classic 5th Generation (A1136) that was purchased for a parent as it is compatible with all their 40-pin gear. One of the parents already has an identical model which was "working fine" (although hadn't been synced for over a year). By this I understand that syncing has worked on their family PC (running Windows 10) in the past, but updates may have been run / fiddling may have taken place since the last successful sync.
However, I plugged in this newly purchased iPod to the family PC (via USB) and strange things began to happen. The iPod appeared to connect, then disconnect and reconnect again in a loop until eventually Windows gave up and said the device had malfunctioned. iTunes doesn't detect the device at all, but once the connect/reconnect loop gives up the iPod appears as a mass storage device - but iTunes continues to ignore it.
Things I have tried
- different computer - tried it on another Windows 10 machine with an identical version of iTunes (126.96.36.199) - works flawlessly (with the same sync cable)
- different USB port on the same computer - all behave identically
- uninstall iTunes, reboot, reinstall iTunes, reboot - same behaviour
- reinstall Apple Mobile Device Support driver (usbaapl64.inf) - same behaviour
Honestly, I'm tearing my hair out. Short of a clean Windows 10 install I don't know what else to do. Any ideas?