This is in reply to Broken Glass, Ann and Jim and all who have had trouble upgrading to El Capitan 11.10.1
My daughter has a Mac Book Pro mid 2010 with a checkered past. In other words it has not been too reliable and has had its share of problems. For the past 6 months it has been sitting because it crashed with the mysterious blank screen. I arrived to visit her for Thanksgiving, and asked her how her Mac was doing, and she said "It's not". So here is what we did to get it working.
This is a MacBook Pro Model 6.2. 15 in, CPU Intelcore i7, 2.66Ghz with Lion 10.7.5
11-24-2015- Trying to revive the MBP. Connected it to charger- Battery
dead. Let it charge for a little while,
then tried to start up- it came up with 3 beeps- Code for 3 beeps was no good bank
of memory- shut it down by holding power
key and let it charge some more.
Restarted and it booted up. We downloaded
and installed gfxcardstatus. This
is a free utility that controls the switching of graphic processors which can
cause intermittent black screens.
This seemed to work, so then we decided to
upgrade the operating system to El Capitan
10.11. It got about 15 minutes from the
end and quit the installation. Looked
this up, and found you could boot into OSX utilities by holding down the
Command –R key while pressing the power key.
We tried to again to install the El Capitan 10.11 and again it quit.
11-25-2015- We then tried the internetrecovery option by holding down the Option, Command, R key while pressing the
power button, got a rotating earth, then said it was downloading additional
components, started at 1 min, then about 2 min , about 3 min , than about 4
minutes remaining and the bar kept moving across, then down to about 3 min
remaining, down to 2 then about a minute remaining then 0 seconds
remaining. Then it restarted, and it
started installing got to 0 minutes,
then restarted and started running with the new operating system El Capitan 10.11.1.
11-25-2015- Left it on while we went to see
the Macy’s parade floats, and it was still on when we came back. I picked it up and twisted it and pressed
down on the cover and it froze. We
restarted and tried to get it to freeze again but could not. Then went to this article.
https://discussions.apple.com/thread/6831398
In that article it had a tip to run a
little diagnostic program “Etrecheck.
So we downloaded this and ran it. It found no hardware problems, just a couple of adware items, so we
downloaded Malwarebytes for the Mac, installed it and ran it.
So El Capitan 10.11.1 has been running for about 1 day, no freezes and not overheating.
Hope this helps.
I would also like to know if we have the model that the bad video card. Is there any way to determine that other than going to the Apple Genius Bar?
Maxgle