I currently HAD a working hackint0sh (10.4) up until this afternoon when I inadvertently upgraded my nvidia video drivers on my original system, thinking I was upgrading my new 10.54 hard drive instead (it was not the host drive) -- so to get to the point, now my original system goes blank after the apple start up. So I can't see anything in order to fix it! Argh! I have a 32inch apple display that now is dark after the initial start up. Anyone out there have any ideas? I am writing from my laptop now. Thanks in advance!