How do i check to see if my drivers side window has come off the track because it will not go up or down

Hello there:
The first thing that you need to do is to remove the door panel than simply inspect the window and if it off track you should replace the actuator and the regulator
The reason for this is the actuator is what cranks the window via a cable and motor
They will eventually fail and need to be replaced
and it is highly recommended to replace them as a set because the price is not much different for the set ok?
Hope this is very helpful for you
Best regards Michael

If it doesn't go up or down it's usually the Power Window Motor is no longer funtioning, if the motor is funtioning than it the Power Window Regulator.