pixels
What are these lines. that appear on my computer? No application was open
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.
2 replies
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)?
Clinton
pixels