6 Replies Latest reply: Dec 28, 2013 6:12 PM by joshpreston
joshpreston Level 1 (0 points)

Hey everyone,


I know this has been discussed to death, but I have had trouble finding someone with my exact symptoms, so I thought I'd ask just in case anyone has any insight.


I have a 2007 Macbook Pro with the GeForce 8600m chip. The computer boots up and the gray Apple loading screen illuminates and loads. Then when the screen would normally switch to the desktop, it goes black. I can plug in an external display and the computer works fine. In the "About this mac" window, no internal display shows, just the external. Same with the Displays pane in System Preferences. I try to detect displays but to no avail, only the Cinema display shows up.


So the computer works fine, it just does not recognize the internal display - but I know the display itself works cause it shows the boot screen when I start it up.


I've tried all the PRAM resets and such.


Any ideas?