Starter?

Hi I have a 2001 maxima 60821 milage automatic transmision since monday my car won't start when I switch it on it does a sound like tak and nothing else I don't know what it could be they told me maybe it was the battery but we changed it and still wont start every light in the goes on but the car wont go on please help me with this I don't know what to do no one know what to do because they don't know what it could be any thing will be very apreciated thx. :Cry: :( :(