My 2003 Camry will not start.

When you say "won't start" do you mean engine cranks and won't fire, or you turn the key and there's nothing?

Turn the key and nothing

Try replacing your starter relay. Also try starting your car in the N position. Also try holding the key to the start position as you move the shifter from N to D a few times. See if it will catch.You may have a bad neutral safety switch.

It will turn over but not firing

Not firing

Auto zone tested the starter it is good. Replaced battery, checked all fuses, but still no crank.

I just tapped on the starter with a peace of wood and a hammer and guess what this time the car finally started. Alleluia