MBP (2012) having huge problems since Os Sierra update.

Hello!

While I own this Macbook pro (mid-2012) which worked like a charm until yesterday.

I've updated to Mac Os Sierra 10.12 yesterday and since then, I had several problems, here is what happens:

First, I could not boot up the laptop. Kept opening to a black screen with cursor (which I could move), it would not really start something else.

I found that all I had to do was to enter the first letter of my name of user online, press ENTER, my password and enter again (while watching the black screen). It worked!

Now, my problem is that I can't turn off the power without forcing. When I press on the Apple logo and the "closed" press I get the same screen black with a cursor, while the unit simply refuses to close actually. The only way to do this is to press the power button manual for several seconds.

Things I've tried (which were not successful):

Looked online and I tried many:
-Reset "PRAM",

-Launch utility disk first aid,

Went to the chat service apple customer and executed:

-Reset of the SRAM "',

-Launch the disk utility first aid.

Has been disconnected when I reset SRAM so I had to contact them again and carried out:

-Start in safe mode.

I was told of safe mode might actually trigger the update to finish and solve the problem, but it would not.

Also, I cried a little, sigh a lot more than I should have lost faith. Those who do not work either.

So here I am, looking for help! What can I do?

Thank you very much!

PS: Sorry for the errors, my mother tongue is french!

Hi Foggylemming,

I understand that, despite a good bit of troubleshooting and anxiety, your Mac has always questions close normally, given that you have updated to macOS Sierra. Fortunately, however, there is always hope!

While the next step should not affect your data, however, now would be a good time to create a backup of your Mac (if you haven't already done so) so that you can be sure that your data is safe. One way to do that is built into your Mac (but requires an external hard drive) is Time Machine.
Use Time Machine to back up or restore your Mac - set up Time Machine

https://support.Apple.com/en-us/HT201250

The next step would be to start your Mac from the built-in recovery drive (after forcing them to close again if necessary). To do this, hold the command and R keys until you see the utility window appears. From there, follow the steps below.

OS X can be installed on the same version or an earlier version of Mac OS X, without deleting your data. You don't need to remove or disable the existing system first.

  1. Start of OS X Recovery now command-r immediately after start-up or that you restart your Mac. Release the keys when you see the Apple logo. Start-up is finished when you see the OS X Utilities window.
  2. Choose to reinstall OS X OS X Utilities window, and then follow the instructions on the screen.
  3. This installs the latest version of Mac OS X, which has already been installed on your Mac.

How to reinstall OS X
https://support.Apple.com/en-us/HT204904

Kind regards.

Tags: Notebooks

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