Skip to main content

Released June 2012, Model A1278. Intel processor with Turbo Boost, Up to 512 MB DDR5 Video RAM

1279 Questions View all

Vertical Colored Lines On Startup Screen

Hey all,

When turning on the power, the macbook pro screen’s white page has many vertical colored lines and will not display anything else. Eventually the many multicolored lines fade and a much thicker conformed line in the middle of the screen develops and does not disappear. The macbook pro is will not bypass this screen.

Thank you.


Answer this question I have this problem too

Is this a good question?

Score 1


Can you post a few images of both conditions Adding images to an existing question


Hook it up to an external monitor to help isolate the GPU issue.


Add a comment

1 Answer

have you tried reconnecting the cable

Was this answer helpful?

Score 0
Add a comment

Add your answer

Ed Murray will be eternally grateful.
View Statistics:

Past 24 Hours: 0

Past 7 Days: 0

Past 30 Days: 10

All Time: 422