How can I fix the dysfunctional power windows in my Audi A2?

My Audi A2's power windows are not functioning properly, and I am unable to roll them down or up. What could be the cause of this issue and how can I resolve it?

One possible reason for dysfunctional power windows in an Audi A2 could be a faulty window regulator. This is a mechanical component that controls the movement of the window glass. It is recommended to have a professional mechanic check and potentially replace the regulator if needed.