I have a 1997 Celica GT and 3 of the 4 windows stopped opening and closing. Driver's side still works great. Any ideas?

Check your master switch if no power to none of the other three,may have went bad.

have you checked that the child lock switch has not been pressed - it's on the arm rest controls on mine.

before you go spending money take the easy way out first take the master switch out and check the harness for power the reason for this is because the one door thats gets used the most its the drivers side so alot of times what happens is that a wire will be broken in the harness going from the door to the body post.next thing you can do if you have power in the harness is to take the master swicth apart and clean it alot of times they are full of lint,cig.askes, so that causes the switch not to make a power contact. any thing after that would be to check the motors i wouldnt take them out a couple of jumper wires and a battery will do the trick,note; it doesnt matter how you hook up the wires since your bypassing the switch you can alternate the wires that will either make it go up or down.try all this first i see people go out and spend a few hundred dollars and there is no need