If you can't transfer pictures, music or videos between your device and PC, view this info on resolving conflicts.
Start Device Manager.
For detailed instructions and older operating systems, refer to Opening Windows Device Manager.
If a conflict is present, a red X, yellow ! or yellow ? is displayed to the left of a listed device or may be indicated by a device entry labeled Other Devices or Unknown. The drivers must be updated or reinstalled.
If a conflict is present: