I’m at a Linux computer at the moment, so I’m trying to do this from
memory – forgive me if I miss a step.

Disconnect any USB devices storage devices
With your phone connected to the computer
Open up device manager (in the control panel).
Expand the phone (click the plus sigh, should be near the top of the
list, called Android, but you many need to look under USB Mass Storage)
Right-click the phone and select “remove device.”
Disconnect the phone and follow the unrecoked driver install directions.