The first thing I've noted is that despite the boot problems continuing, I was able to boot into restore mode (a first), perhaps due to my machine no longer overheating and either crashing or shutting down prior to restore mode booting. I have successfully replaced the thermal paste and begun testing the machine. Following a hopefully successful replacement, I will report back on the results. Because Apple's logic-board replacement program doesn't seem to cover my Macbook Pro (according to website and to customer service), I will need to attempt to replace the thermal paste on the logic board. Had I not noted the temperature spike and shut down the Apps, I probably would have run into the same problem again. While the GPU never reached beyond 70C, I was shocked to see my CPU reach temperatures beyond 100C particularly when other accounts were enabled, and processor intensive Apps like Photos were running. It was at this point that I purchased the App Temperature Gauge and begin to audit the temperature of the GPU. Pouring through the forums, I discovered that other users were seeing blue screens or garbled video associated with failing GPUs due, perhaps, to overheating. Yet the machine would eventually exhibit the same behavior. Because there was not an updated driver for El Capitan, I purchased a new printer (Epson), and uninstalled the Canon drivers. At this point I searched for other possible incompatibilities, and discovered an old printer driver for my Canon 860MX. After purchasing a new hard drive (Crucial MX200) and reinstalling the El Capitan, I again ran into the problem. Following my previous post, I contacted Apple and was told that the hard drive was likely the problem. Keeping your confidential data secure during hardware repairĪpple also recommends that you deauthorize a device in the iTunes Store before having it serviced.Īfter testing the machine for a few weeks, I have made a discovery. If privacy is a concern, erase the data partition(s) with the option to write zeros* (do this only if you have at least two complete, independent backups, and you know how to restore to an empty drive from any of them.) Don’t erase the recovery partition, if present. There are ways to back up a computer that isn't fully functional-ask if you need guidance. You may have to leave the machine there for several days.īack up all data on the internal drive(s) before you hand over your computer to anyone. Make a "Genius" a ppointment at an Apple Store, or go to another authorized service provider. If the memory isn't at fault, then something else is, such as the SSD or the SATA cable (which is often damaged when the internal drive is replaced.) You seem to have reproduced the problem with a clean installation, so it has to be caused by a hardware fault. When El Capitan is running properly, it's fantastic.but these crashes are driving me crazy. If anyone can help, I would really appreciate it. I have looked for any offending kexts (as mentioned in the various fora), but don't seem to have any of them. The only 3rd party software I have installed is ClipWrap, Tor, Office 2016, Trim Enabler (I've disabled), and Quicken 2015. After a few days, they began occurring again. Finally, I gave up and did a complete, clean, reinstall of the OS. These problems initially began when I upgraded to El Capitan. Progress bar gets about half way and screen freezes.Īdditionally, the machine will crash randomly either halting, or going to a blue screen (after which I have to begin the reboot process).Īfter multiple PRAM (Command Option P R) resets the machine will eventually boot (it sometimes takes 30 or more minutes), but there doesn't seem to be a reason why it eventually boots (I can't detect any kind of pattern). Progress bar will get about half way, then the screen goes blue and doesn't load (sometimes it will shut down after about 30 seconds to a minute).Ĥ. Progress bar will get about half way, and then I get a garbled (graphics) bar across the screen, and then it goes to a white and doesn't load.ģ. Progress bar will get about half way, and then the screen goes white and doesn't load.Ģ. In short, I believe that others are having a similar problem: El Capitan consistently freezes while booting displaying one of the following behaviors:ġ. I have never had any problems with this machine prior to El Capitan. I have a early 2011 Macbook Pro (8,2) with 16GB of RAM with a Samsung 840 EVO SSD and I am running OS X 10.11.1.
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