If dashlights, then bad starter/solenoid.
If no dashlights, then could be bad connections at battery or cables or cable grounds. Also could very well be the ignition switch in the steering column.
Nothing
get a new car
When you turn the key and nothing happens.
There are a number of reasons you can turn your AC or heat on and nothing will happen. The system may not be hooked up.
Battery is probably dead.
nothing.
starter
Starter solenoid
i do believe they come take you away
Assuming there has been no chemical reaction, nothing happens to it. Except that it can turn to water vapour or ice at certain temperatures.
nothing, you just cant see them with all that red...
First guess; the battery is dead. Second; a break in the ignition switch wiring. NOTHING happens? No noise, no clicks, NOTHING? Check to see if the ceiling light comes on when you open the door.