at first the windows would only work from the drivers door, replaced the master switch and everything worked for a month, then nothing worked at all- thinking it was the cheapo switch, I bought and installed another name brand one, still nothing works- have checked all of the fuses and breakers that I know about and its all good, any suggestions?

 

I would use some small jumper wires to see if the window motors work with power. If they work then I'd start looking for maybe a bad ground or some breakages in the wiring somewhere. You could check with a volt meter and see if you are even getting power to the windows.