 All right, try and watch the headlights. If it's nighttime, it's easy to see. If it's not, somebody else can look at them. Do the headlights go dim or dimmer as you're trying to start it? If they go dimmer, dimmer, that tells us that the starter motor is trying to engage, but it can't for some reason, an internal failure perhaps. Maybe the engine seized. I mean, I don't think so, but hey, anything's possible.