2003 4.4 won't start
 

I'll try to be as detailed as possible maybe someone can help.
First, the key remote does not work and haven't worked for three years, so my alarm system is not functioning.
I was driving on the highway, and suddenly i started loosing power. Pulled over turned the car off. tried to restart but nothing happened. the ignition lights will come on normal, but the engine will not turn. there is no click, no noise, nothing, turning the key will not do anything.
when i started loosing power, a message appeared about the engine, but i can't remember exactly what I was too busy trying to get the car to the side. This is the 4.4 with the navigation, don't know if that is relevant to the issue. the engine has 79,000 miles on it.
any help is greatly appreciated.