The starter motor won't play.
Once again, check the kill switch, many bikes have the kill switch wired "before" the starter.
Check side stand switch, neutral indicator switch, clutch inhibitor switch and any other electrical interlock switches. On B.M.W. they also have a "starter relay" which prevents the starter motor from working if the engine is running. I know this is a pain, but I can't list every test on every bike. Sorry.
Does the solenoid "click" when you press the button.