What could be the problem when I aply brakes pedal gets real hard where car wont stop when braking coming to a stop brk. light and abs lights on

Hey Joes, 1 problem at a time ,if brake light is coming on that is in the proportion valve ,did you have to push reset button to make light go out,? if the ABS lite is coming on what you can do to check and see if that is the problem is unplug it and try brakes ,it will deactivate ABS and give you normal braking and ABS light will be on ,see if symptyms change , also did you reset ABS sensors to the tone wheel when you replaced rotors ? I don't know what you have and I have seen some cars need a importaint reset procedure for abs to work properly. good luck I hope I gave you some good things to look at that help you.
Woody