The issue with the GPU becoming faulty / disconnected / unseated due to heat usually happens over time. Most super geeks are a bit more passive, we may cuss a bit but think well a reboot might fix it after an uptime of 10 days (No need to reboot machines or worse yet shut them off daily/nightly that is old school mentality and more harmful to the computer).
The reboot temporarily fixes the issue and in the beginning IF we were aware of this issue we wouldn't have been passive and would have done something right away, I did but alas it fell on deaf ears at Apple.
The point being is the longer the machine is used and each time it does heat up to the point where it is unusable it does damage to other parts inside the machine. When they opened mine all the wiring and cables inside the machine was melted. They replaced all the wires and cables twice. They also replaced the logic board 3 times, the optical drive 4 times if I include what they did on the DOA machine rather than taking it back and giving me a another machine. A side note when I got a hold of Tim Cooks assistant she said she would not replace my machine which was DOA because it was a replacement for an identical machine that was DOA purchased two weeks prior with the same issues. Well this only shows that I received 2 bad machines in a row and it cost me some major players in the music industry because I couldn't work. My photography company suffered too I couldn't do any post production. To me that excuse / reason was completely asinine and let me say I was under Apple Care and they refused to do ANYTHING. On to the other issues this long term heating issue caused that seemed harmless at first, it took out my airport which was replaced 3 times, the firewire port did not work, the mini display port would drop out constantly causing me to stop whatever I was doing and pull the mini display adapter to the big screen monitor and plug it back in to get my screen back. I will say having the machine connected to an external monitor does for whatever reason stretch out the problem, maybe because I used it in clam shell mode from day one therefore no dust no nothing ever was inside. I never used the keyboard or screen exception to set it up when I first received it. The rest of the list of failures was a few times when they replaced the logic board and returned it to me the USB ports did not work, there was NO power. I sent it back in and after a week of "testing" I received a phone call from the depot telling me they could not reproduce the issues so I asked if they plugged anything into the USB port and he said no all we do is run hardware test to stress the machines, well this issue does not I repeat DOES NOT show up on a hardware test. After talking for about an hour I received my Macbook Pro the next day, I live very close to the depot by way of Fed-Ex, the paper inside stated logic board replaced due to no power to USB port. They also replaced the wiring again as it was visibly worn and it was just replaced a couple of months prior for melted wiring. Of course the machine never worked correctly from the day I received it. I have 8G of RAM in it but it only shows up 4G on boot up and drops to 1G within 5 minutes with nothing running in the background, on start up or any other method of running an app, daemon, etc. This cat and mouse game went on for the entire 3 years I owned the machine. The OS was reinstalled so many times I lost count. Of course the standard resetting the PRAM and all the other resets were done every time I called in. The audio jack did not work which was an issue given the machine was mainly used in my music studio so I had to purchase M-Audio 4 Track to bypass the audio in the Macbook Pro. It cost me a fortune to use the machine given I had to purchase other devices to work around the devices that did not work on the Macbook Pro and this was out of the box the day I received it under Apple Care. The list of issues went on and on and on and the frustration led to a stroke which was costly, mentally, physically, as well as my reputation given my livelihood was taken away because I was in critical condition without the main workstation.
Someone posted they were going to sell their Macbook Pro before it goes completely. He/she had just had the logic board replaced so it was working and he/she was going to sell it. Now at the time I thought there is noway I could do that but after months of thinking about it and being without the ability to use the Macbook Pro I thought well if a major company like Apple does it all day every day then why not? Its obviously a buyer beware when it comes to Apple these days, the machine boots and I have the paperwork from the Apple depot stating the machine is back in good hands, mine and now passes all test. Well of course the 4 previous times I received the same piece of paper and for months it went back and forth to the depot even though it passed all the test, however once opened they were able to visibly see the issues, I mean its kind of difficult to not notice melted wires and cables. The last time it went in they did nothing and I received a phone call from the "White Glove" manager asking if I understood whey nothing was done. I said yes, because Apple DOES NOT Care, it passed all the hardware tests and you all now know this issue will pass the test and it would cost a fortune to replace all the Macbook Pro's out there that is defective. Replacing defective parts with more defective parts will return the same results, the definition of insanity is doing the same thing over and over expecting different results. He said "My Condolences" and hung up. So as much as I really think its wrong I have to do something so I will use Apple's reasoning and method of sales, which is buyer beware, and I am wiping it clean, doing a complete reinstall and selling it. I will show Apple's paper showing it has a clean bill of health, of course it looks brand new because I did use it in clamshell mode so there isn't a scratch on it anywhere inside or outside with the exception of one small nick that happened at the depot but one would have to be very OCD to see it.
I hate that it has come to this and turned me into a person I don't even like by knowingly selling something that I know is going to fail but Apple does not feel bad for doing it, as a matter of fact they refuse to even recognize it, and they try to blame the user. So why should I behave any differently? I have Apple's stamp of approval the machine is in top notch shape what more do I need besides a temporary break from my conscientious?