I don't know why they call it a regulator. All it is a elevator with some steel braided lines like a bicycle brake line. It moves the window up and down is all. If it's the window elevator then ur window will attempt to move. Motor, the window won't move at all. There is a little trick to get it working if it's the motor.
Basically the design of the motor is an electric magnet that spins in a cylinder. Sometime debris or the positive and negative connections become loose or the motor gets stuck.
Take the door panel off, there are I think 3 bolt holding the motor to the inner door frame. Take those off so th motor is Kinda dangling inside. Grab the motor with your hand, press it against the frame of the door and wack the other side really hard with a hammer. Do this until the motor brakes loose.