Ford,Key turning freely in cylinder

One day i went to start my car and I was able to turn the key freely, and the power stayed on after I took the key out. I changed the ignition lock cylinder, but my car wouldn't start. So I thought my actuator rod was broken. I broke apart the steering colume and my actuator rod looks fine. i changed the ignition switch, checked all the fuses. I dont know what the problem can be. please help.
My car has an automatic transmission.