when i turn the key, the dash lights come on but the car won't start.
also the windows won't roll down, but the locks work and the stereo works. and the buttons on the key don't work. When i turn the key there is nothing, besides the lights,it doesn't turn over. i just replaced the battery
Sounds like either a security system problem, or a starter solenoid. You will have to have this diagnosed by a mechanic.