Doesn't start - RCA M4204 MP3 Player

You provided no info on the vehicle motor,so
I would assume you may have an Air Idle Solenoid
next to the throttle or on the intake manifold,that you
can remove & try cleaning or replace.

White smoke normally indicates steam, did the car overheat ????...if it overheated check hoses for leaks,,,, loss of water etc

get your battery checked

Could be a number of things but may want to begin by checking wiring to starter, battery, or even the ignition switch. These components may not turn your engine light on.

sounds like it having trouble starting. when was the last tune up ,and are there any codes on.

loose or dirty battery connections ,starter solenoid faulty, low battery

It is very hard to help you when you give no details. But if it doesn't do anything when you try to start it you probably need to charge battery or get new one. If it is trying to start and doesn't sound weak then you need to have someone look at it. It doesn't sound like you would want to do anything yourself but if its not the battery, it doesn't sound good. Good luck

try starting meaning pull the rope 6 times and then check the spark plug if its wet clean it or try a new plug, if its dry your not getting fuel in the cylinder which means carb problems. if you have a seringe or something to put some gas into the spark plug hole then install spark plug and try it. if it runs for a couple of seconds then you need to focus on the carb. only put a small amount of fuel in the plug hole if you try it otherwise youll be pulling on the rope for awhile before it will start. hope this helps.

Have you tried "Last known good configuration"?

Restored factory setting & working fine