Black flashes

Discussion in 'macOS' started by Gen, Nov 9, 2010.

  1. Gen macrumors 6502a

    Gen

    Joined:
    Jul 15, 2008
    #1
    A few times a day the top and bottom of my screen flash black quickly - not even a full second.
    Any ideas of what it could be, or if I can figure what it is?

    I ran the Apple Care TechT tool and nothing came up wrong - I have the 2.4Ghz 15" (unibody)
     
  2. Gen thread starter macrumors 6502a

    Gen

    Joined:
    Jul 15, 2008
    #2
    Just noticed it only happens when I use the integrated 9400m and not the 9600m gt.
    Hmm.
     

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