Both ns windows have stopped working , also window lock switch too , fuse or switch unit on drivers door ? 

Any potential power related issues to the doors, on either side, front or rear, are almost always wiring related, a specific weakness on the MkII Superb.

 

The weakness is usually inside the rubber gaiter in between the front door hinges, the wires are taught, rub, stretch and finally break over time.

 

An almost weekly occurrence, here is a similar thread just next to yours with some handy tips to get you started...