Why won't my 2000 pontiac grand prix start

The relay in the glove box clicks when I turn the key over but the car wont turn
over at all. I have reset the security repeatedly and noting worked. The car
dings even when the key is out and the lights are off. I made sure that the car is
in park and that did not make the car stop dinging. What could be wrong with
my car I don't know what else it could be we just replaced the power steering
system in it would that cause it? We replace the starter and checked the old
one both the old one and the new one still work why is my car acting like the
security is going off.