1 Reply Latest reply: Dec 2, 2012 4:57 PM by Grant Bennet-Alder
dan510iel Level 1 Level 1 (0 points)

I'm running 10.6.8 Mac Pro and getting blue to black screen at boot up. I am only able to log in by safe mode only, please help...

Mac Pro, Mac OS X (10.6.8)
  • 1. Re: blue to black screen at boot up.
    Grant Bennet-Alder Level 8 Level 8 (49,250 points)

    Do you get:



    gray screen

    Dark Apple


    Spinner spins for the usual amount of time

    screen goes blue or black at the point where you would normally login?



    That is exactly when the graphics card is shifted to automatic. Although that also is the point when added kernel extensions have been loaded and are made active, users report this symptom often correlates with graphics card failure.


    Safe Mode does not use the driver or automatic mode, so being able to operate in Safe Mode adds credence to graphics card failure.