Welcome to my world and many other's world as well. I just paid $300 this morning actually to get the entire computer refurbished at the Apple Store. I'm not happy about it. I hope the class action lawsuit goes through because I want a refund for this repair. I guess I got lucky because they issued a flat fee repair for the refurbish. A lot of other people were getting much higher quotes for the repair.
Link about lawsuit:
http://appleinsider.com/articles/14/10/28/apple-hit-with-class-action-lawsuit-over-2011-macbook-pro-graphics-failures
There is also a nearly 11,000 post discussion about this on the official Apple Support Forum.
https://discussions.apple.com/thread/4766577?tstart=0
Edit: Don't be surprised if you have increasingly more frequent and worse graphical issues.
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Direct quote from:
https://discussions.apple.com/thread/4766577?start=10965&tstart=0
Not having tread all 12000 posts to this issue, I try to summarize the issues and workarounds discussed here.
The MacBook Pro model from 2011 (Early, Mid and Late) are equipped with an Internal Intel HD-video 3000 GPU and a AMD Radeon HD 6770M GPU. The former is normally used for basic screen display, the latter is used when you start to use the MacBook Pro for more advanced graphical application (one of the main features most of us bought such a very expensive MacBook Pro to start with).
The AMD Radeon GPU, due to heating up, or bad soldering or what ever, in many cases progressively breaks down, ending up in MacBook Pro that is hard to boot and when booted, a MacBook Pro that crashes as soon as you try to use its advanced graphical features.
The solution Apple provides is to replace (for free or paid) the Logic Board. The chips on this replacement board fail progressively too, so that is not a real solution.
You can opt for re-soldering or re-balling the AMD Radeon HD 6770M GPU by a third party. A process in which they (re)install the (new?) AMD Radeon HD 6770M GPU on the Logic Board, but the better soldered. Beside this is done by third parties and you effectively give Apple all reasons to dismiss any future claims from you, these processes apparently do only provide a longer lasting, but no a real lasting solution.
Using a tool like gfxStatusCard you have the opportunity to put the GPU used to the internal one, resulting in little bit more stable system, as long as an other process does not force the use of the more advanced AMD Radeon GPU. What happens quickly since we bought this expensive MacBook Pro for its advanced graphical capabilities.
I have the option to (re)move the drivers the AMD Radeon GPU. Resulting in a system that cant be forced into an advanced graphical mode anymore and is more stable again. It lacks however all advanced graphical features apple computers are well known for.
Am I complete and correct? If so then I bought a very expensive Lap Top that apparently does not live up to it specification and live expectancy that I as a consumer may count on.