hi there! ihave aproblem with my toshiba satelite L45.

[ivine]

it powers but does not display. i tried changing the RAM, using an external monitor, removing the Battery but it never worked.
what could be the problem and what should i do so as it works again?

[Mulreay]

Please supply MUCH more information.. 

You have not told us exactly what is wrong, just that it does 'Not display'.
Can you please supply full system specifications and a  complete walkthrough of what you have done.

I assume your First language is not English but please try to break it down.

[JJ 3000]

Do you see anything on the screen at all when you first tun it on?

Try shining a bright light at the screen to see if you can detect a faint image.