Check the fuses. There is a fuse for each power window in the fuse box under the hood. If one of these fuses is blown, it will prevent the corresponding window from working.
Check the wiring. The power windows are powered by a number of wires that run from the fuse box to the window switches and motors. If any of these wires are broken or damaged, it can prevent the windows from working.
Check the window switches. The window switches are what you use to control the power windows. If one of these switches is faulty, it can prevent the corresponding window from working.
Check the window motors. The window motors are what actually move the windows up and down. If one of these motors is faulty, it will prevent the corresponding window from working.
