My graphics card has malfunctioned and is preventing my MacBook Pro (2011) from booting.
Based on my research I will have to otherwise have the logic board replaced.
The defective ATI graphics card is preventing my MacBook Pro from booting because it gets stuck on a gray screen sometimes even when using the recovery CD.
Best Answer
You may already know this, but there is an apple repair extension for these kind of issues now. They'll fix it for free.
https://www.apple.com/uk/support/macbookpro-videoissues/