OK, it looks like I have solved the problem at least on my Mac Mini. I challenge others that have the opportunity to do this same test, do so, and come back with your results. We all know that these GPUs cannot be repaired, but it appears to me that the GPU is the reason for the failure. Of course, what I’ve done in no way is a fix. To sum this up, it appears clear to me that the reason so many of these 2011 models were no longer starting up was due to the failed AMD GPU. I was able to start it up again but I found it to be unreliable as it would crash and restart while trying to start up. I let it run for a while and after some undetermined amount of time, the computer shut down on its own.
Best operating system for mid 2011 mac mini full#
It ran long enough for me to do a full installation of High Sierra. Next,I pressed the power button and the computer immediately started up. After letting it cool down, I plugged in the Mac mini and the power indicator did not flash this time. I applied almost 500 degrees Fahrenheit for 2.5 minutes using a rotating motion of a SMD station. At this point I really had nothing to lose because it didn’t work anyway. I decided to add some solder past and do a reflow of the AMD GPU. The computer would not start, but the caps-lock would flash. And, there was a similarity with this and the HP G62 which suffered a similar fate. In the back of my mind, the GPU issue of the 2011 MacBook Pro was always present. I did a number of tests looking for shorts and other irregularities on the logic board but found nothing.
Other Mac Minis that I have do not do this. I also noticed that as the unit was plugged in, the power indicator would flash momentarily even without pressing the power button. I’ve been working on this on and off for about 4 months… not wanting to give in. It exhibited exactly the same symptoms as other here are experiencing where the computer power indicator (sleep indicator?) comes on only for a brief moment when the the power switch is pressed. I see that this is becoming an old post but I wanted to add some testing that I’ve been doing on a 2011 Mac mini that was given to me.
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