2 power windows don't work (drivers side front and back) 2004 Ford Explorer

What about the window motors ? Try this hold window switch in the down position and tap on window motor with a hammer if is starts to work replace motor also you can test power going to window motor with a test light.

Ok thanks, I'll give it a try.

You can also have someone hold down the button to lower the window, while at the same time clasping each side of the window with the palms of your hands and pushing down. If the motor seems to "catch" the motor is bad.