I've been having the same issues with my MBP 15" late 2011. I worked for over five years without any issues. But after making some firmware update after installing Sierra on it, a few days laters it just stopped working. I couldn't even power it on after that.
So I opened and disconnected the hard drive, the dvd drive and tried to boot.
I was able to get into the maintenance tools and was able to shoot perform an extensive Test.
The service tools were not able to find anything, so I thought "Oh well.. what on earth is going on?"
I reconnected the hard drive, and I was able to boot the machine. First thing I did was of course to backup all my data. After that I made the mistake of shooting the machine down... I haven't been able to boot it ever since.. not even the maintenance tools...
I turns on, apple logo shows, then the screen blinks black and turns grey afterwards and stays there.. I can't even boot from a usb installation drive.
If I let it there like that, it turns off itself after a while...
Cheers..
Lucky me I have a laptop to use from work... but you know.. it is not my machine..
Cheers.
best regards
R
2 Comments
Do you gave the i7 CPU? Are you sure it is the 13" and not the 15" (which is covered by recall).
by mayer
Yes its definitely 13" and i think its an i5 processor, with the Intel HD chip which was known for defects
by Michael Schneider