2007 Hyundai Santa fe won't start

As far as I know(& I have changed a few), there is only 1 fuel pump, and the filter attaches to it. The filter shod have been replaced at the same time as the pump. A clogged filter can certainly cause a no run condition, as could leaving a filter off a pump and possibly floating debris in the tank could clog the pump as well. When you turn the key to ON before starting the car, do you hear a click and a slight hum from the car? Could be a pump fuse or a pump relay gone bad, or could also be that the wire connector was not snapped properly closed when the pump was changed and has come apart.