I am not trying to give you false hope, but since nothing worked so far, please check all fuses, and if they are ok, try this
If you know your radio code (because you will have to enter it after this - if you dont it will be locked)
unlock car.
remove battery red terminal and let rest for 10 minutes.
put cable back.
go to drivers door and turn clockwise (to the right) the key car will lock
the key is now to the neutral position (vertical center)
repeat locking as in step 1 - this activates the alarm
remove key.
wait until the red light on the radio starts flashing - if it does not, or you have an afermarket one, wait five minutes
now insert key and unlock car (anti clock wise left).
repeat immediately
(meaning you unlock two times anti clock left)
enter the car and put key in.
position one - lights go on in the cluster
listen for fuel pump - (has to be sending fuel)
try to start car.
if this does not work then visit workshop or whoever knows.
still I find it very strange that no codes appear….