Check the switch first
check the window switch first, on the window that is not working, check if current is comming to the switch. If there is(key must be on) press the switch in the window down position and hold it and test the teminals on the window switch now, 2 terminals should be hot, release the switch and then onlee one, press the switch in the up position and and there again should be 2 live wires. if there is no current coming to the switch at all the problem may exist solely with the drivers door switch, it over rides all the other doors, (IE if yu unplug the driver door switch none of the other windows will function even tho they hab their own switch)