starter turns off car but not on

[CarPsyco84]

If every thing goes out like a light switch when you hit the starter, its a bad connection on the batt. terminals, my car does this alot, I get a wrench or a hammer and hit the terminals and it starts right up. If they're corroded a bunch thats almost certainly why, You could try using some baking soda and water to clear up the corrosion, and maybe a wire brush to clean em up.