Car won't start - Need help

My wife’s van is in the garage - wont start this morning. The battery looks okay (even though it is 4 years old) as the horn/radio works and lights are bright. It makes a light intermittent sound when key is turned in the ignition. Can’t push it as well out of the garage - unable to put it in neutral gear. Would require your input as to what seems to be the problem.

Please help… thanks

The most likely problem is the battery. The lights, radio, etc, can work just fine, but that doesn’t mean the battery has enough amperage to turn the engine.

Thanks mcparadise - will change the battery temporarily with my other van’s and see the problem is of the battery or not. If yes will buy a new one. Otherwise ???
Will give it a try first.