2 Replies Latest reply: Jan 16, 2013 11:53 PM by clintonfrombirmingham
Smaziz Level 2 Level 2 (305 points)




What are these lines. that appear on my computer? No application was open

  • AndrewBen Level 1 Level 1 (55 points)

    Ever since my brother got Mountain Lion on his computer, it showed almost that same exact thing. I have this question too! I don't know how to fix it though.

  • clintonfrombirmingham Level 7 Level 7 (29,995 points)

    The orginal poster's screenshot appears to be a hardware problem with the GPU. Which model MacBook Pro do you have (e.g., 15" late 2011)?