Car won't start! on 2002 Ford Escort

My car won't start, but I don't believe it is that battery because the air, lights, and radio still works. Not sure what the problem is. It ran fine the night before. Any suggestions?

1 answer
First make sure the battery cables are clean and tight and if that does not work then it could be the starter has failed about $200 plus 1 hr labor to install. There are complete instructions to remove and replace the starter at www.autozone.com