Boots to the proress bar then screen blanks, why?
This Mac was dropped, (not by me) and and now when trying to boot, it gets past the spinning wheel, and just as the Mac with the progress bar comes up in blanks.
I've removed the hard drive and checked that it's OK. It mounts an another Mac, and is readable. The same thing happens when trying to boot from the Mac DVD. So I don't think it's the hard drive.
Removed and reseated the RAM, no change.
No warning beeps at start up.
Could the logic board have been damaged?
How can I tell what part to replace?
Is this a good question?