They don't work from any switch? Sometimes the switch(es) go bad and the windows stop working.
Take the switch from the door that's working (not the drivers door

) and switch it with a switch in a door that isn't working. The switches pop right out of the door holder and you need to push in a little square tab on the switch to disconnect it from it's power supply. Then just switch with the "broken" door and see if that get's it working.....just an idea. May help narrow down a bad window motor to a bad window switch.
Good luck!