First try every port–and no USB hubs, just direct connection to the computer.
If there’s still no love, go into Settings/System Settings on the Fuze and change the USB Mode to MSC and see if it charges.
Look in the computer and see what version of Windows Media Player it has. (Open WMP, click Help and About.) It has to be 10 or 11 to recognize the Fuze in MTP mode, which is probably what you had it set to. Update Windows Media Player to 10 or 11, and you can switch it back to MTP.
