The power windows are not working at all.

ok,make sure you tried all the windows on all the door switches,,,,what i think you may find is broken wires,sounds like it,,,,,when you open the drviers side door,look in the crack where the body of the car meets the door and you will see a black wire harness,you are going to carefully cut open that harness loom with a sharp razor knife,Be careful not to cut yourself and not to cut into the wires inside the loom,,,once you got it cut open you will need to inspect the wires inside,,they get dry and brittle from all the opening and closing of the door and the wires chaff open and short and some even break apart,,ive seen 6 broken wires in 1 ion door jam,,,,all the wires for all the windos run thru here because of the master switch being in that door...,,if oyu do find broken ones go get the pinkish red **** connector,make sure they are heatshrink connectors so they are weather proof,fix all the wires and heat the connector up to shrink it tight then electrical tape over each connector seperately,then put loom back on and electrical tape the complete loom from door to body,,,,,and all should work...ive never seen a bad windows switch knock out all 4 windows so i doubt its that,,,but good luck,hopefully this helps you