Pull a bad window's switch and swap it with one you know works to see if its the switch.
The next thing to check is that somtimes the wires in the door can break off where they flex at the hinge boot. Peel it back to have a look, If they're still there you will have to remove the door card and have a look a the motor on the regulator.
The next thing to check is that somtimes the wires in the door can break off where they flex at the hinge boot. Peel it back to have a look, If they're still there you will have to remove the door card and have a look a the motor on the regulator.