my 1997 laguna the battery in the key failed and remote locks didn't work, that system also disarms the immobiliser so the car turned over but didn't fire.
Is the engine turning over? Or just totally dead?
As dave said, any light work? Internal or external?
Could be the car's battery or the key!
If its the key the immobilser light will flash fast while turning over,
Do you have a spare key to try?
ok a quick update..i got new batts in the key fob and still nothing?no power at all, no lights will come on?
Do you think its the car battery?