Scramble/Pixelated then flickering screen.
Hi everyone - not sure what to make of this. Screen scrambles/pixel
Hook it up to an external monitor and see if the problem persists. You have the Nvidia video processor which Apple did a recall on. If the problem persists then it's the Nvidia issue which is very well know. Apple will replace your logic board for free and pay for all the shipping. Do a search on this site for "Nvidia" and you will finds lots of information. If Apple backs down, then go to www.nvidiasettl
Here's where to contact Apple: http://support.apple.com/kb/HE57