My car won't start. everything comes on lights, radio, but it won't turn over. it goes tink tink tink under the hood when trying to start it.

Check windowshied wiper motors after you turn on head lights and everything else...if window wipers dont work then its the battery going dead. try trickle charging the battery! make sure battery is not more than three years old, if it is, don't waste your time, its due for replacement anyway. if everything works then it could be wiring from the ignition key system or its been security locked out...that means the car thinks its been stolen and shuts the fuel system off. you can try to dissconnect the battery for about 15 minites then hook it back up to see if will start again.

It's either the battery hasn't got enough voltage in it to start the engine or possinly the starter motor has gone. try jump starting it. DO NOT connect the earth lead to the battery as it can damage the computer/ecu. instead attach the earth lead to an engine mount when trying to jump start the car.