Chosen Solution
Well, my macbook pro 15 late 2011 has been going crazy for a few months now. I had no idea of the logic board problem, and of course Apple did not really contact anyone who might be affected (no recall like automobiles I guess). I think it is the logic board as I had problems with running fan, and high kernel (I am not familiar with the jargon here) usage. The problem recently has been rebooting with a fuzzy screen (horizontal little lines) that went to a gray screen and then rebooted. It does seem that when it gets hot the problem comes up. Also, shutting down the computer was caused this problem. I took it to the Apple genius and they tested it and said the HD was about to fail. I purchased a new one and installed it myself. While I reloaded the OS however, the fuzzy screen and then the gray screen started again. I am beginning to think that it is the logic board that has already been replaced in June 2014. So I am thinking of replacing it myself if it isn’t too hard a job.. any suggestions? thanks
If its the all to common gpu issue it should show up on a apple diagnostics. you can do this your self follow this link, not to criticise apple but when I worked their sometimes genius’s would miss the gpu errors as once the diagnostics failed on one thing it couldn’t go any further for example if you have a gpu issue but your hard drive is also faulty when you run the diagnostic your hard drive would come back faulty first and wouldn’t go any further. (I hope this makes sense) (https://support.apple.com/en-gb/HT202731)
