my son replaced the water pump and serpentine belt on my car. Now the car won't turn over and start. I need a car so I really need to figure this out. The car was left on overnight so thought it was the battery. Charged the battery and still nothing. Now they are saying it's the starter but never had problem one with starting the car before my son replaced those two things. When I try to start the car all the safety lights come on as usual but then it just gives a quiet click and then nothing. It's driving me nuts because i'm not even sure where the starter is located at. This is my only car and can't afford to buy a new one. I need help.