My car lost all power after a puff of smoke came from under steering column.it will not start and acts as if battery is dead.
Sounds like an electrical short. You'll have to check your ignition switch and corresponding wiring and fuses.
I agree with the ignition switch opinion. The only other thing I can think of is a poorly installed alarm system or other aftermarket accessory. I had to pull apart my dash and repair the harness for this reason in a '95 Escort I used to have. ($8 an hour alarm install by the dealership.)
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