There are several possible issues here. First, check and replace the wire from the battery to the starter. It is possible that it has been damaged due to over cranking. Next do the same for the ground wire. If these don't help then I would pull the starter and solenoid and replace the solenoid first unless you smell burnt starter. If it is burnt then you will need to replace the starter. No clicking usually indicates no voltage to the starter or the solenoid is not engaging the starter.