I downloaded the latest updates from apple when the computer finished and restarted the screen was blank ( Black ) can open to other computer via firewire T so the question is how to install my 23" apple screen , and if should it work if the screen on the computer is dead. ant help will be appreciated

have twice been able to open with disc and reinstall but on restar dead .Tried
PRM Tried removing battery and pressing start have clean installed Hard drive using firewire to othe rcomputer ???