imoboliser problems
 

Hi All, hoping someone can help me, when i turn the key in the ignition i should get a picture of the car as well as the normal glow plugs and such, when this happens the car starts no problem, however when it does not show the car picture the car will not start,
i have been told it is the ECU, but not sure which one, any ideas, how to get rid of the immobiliser or any ideas,

thanks Mac