Why isn't my computer booting?
My MacBook Pro 15" is not booting up. When I press the power button, the Apple logo comes up, then disappears and stays stuck on a White/Grey screen. Sometimes it goes to a screen with blue lines running down across the screen. Here are the list of things I have tried:
Apple Hardware Test (basic and advanced) = no problems
Holding Option to select boot medium works but when I click either my macintosh partition or recovery, same problem
The same problem happens when I try to boot from my original installation disk.
I tried swapping out the RAM.
I've tried swapping out the Hard Drive.
The computer does see the hard drive since it can see the macintosh partition
Is this a good question?