bryanbenjy
Level 1 (5 points)
Mac OS X

Q: MacOS Sierra bricked my iMac

So yesterday my 2014 imac prompted me to install MacOS Sierra, which I did, leaving it installing at 5.30 when I left work with approx 33 mins remaining.

 

I Come into work this morning to be greeted with the following screen:

FullSizeRender.jpg

 

I've tried turning it off and on and trying to boot in safe mode by holding shift when turning on, but nothing makes a difference, this comes up as soon as I turn it on and nothing makes it go away? It's flickering but not moving and nothing seems to make it respond.

 

Desperate for any suggestions!

iMac, macOS Sierra (10.12)

Posted on Sep 22, 2016 2:28 AM

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bryanbenjy

Q: MacOS Sierra bricked my iMac

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  • by bryanbenjy,

    bryanbenjy bryanbenjy Sep 23, 2016 11:46 AM in response to MuckyDuck
    Level 1 (5 points)
    Mac OS X
    Sep 23, 2016 11:46 AM in response to MuckyDuck

    So, looks like it must be hardware!

     

    tried all of these things, spent 3 hours on the phone to apple support trying other things, and eventually did a factory restore back to OS Mavericks that it came with, and still got the same problem. Worst thing is now I can't even get it to register the additional monitor so it really is bricked!

  • by Csound1,

    Csound1 Csound1 Sep 23, 2016 11:49 AM in response to bryanbenjy
    Level 9 (50,746 points)
    Desktops
    Sep 23, 2016 11:49 AM in response to bryanbenjy

    bryanbenjy wrote:

     

    Yes, I get a chime and I have a wired keyboard anyway. I will try that, I thought it was shift that put it into safe mode?

     

    But when I had the second display working earlier, I was using it fine, so it appears it did the update fine, if anything it's just the driver for the iMac display which isnt working, or worse a hardware failure.

    It is Shift, not Command-R which loads Recovery. And not Shift-R either

  • by Csound1,

    Csound1 Csound1 Sep 23, 2016 11:50 AM in response to DarranPotter
    Level 9 (50,746 points)
    Desktops
    Sep 23, 2016 11:50 AM in response to DarranPotter

    Wrong again, it is Shift (only) not Shift R

  • by Trstam,

    Trstam Trstam Sep 23, 2016 12:29 PM in response to Csound1
    Level 1 (19 points)
    Sep 23, 2016 12:29 PM in response to Csound1

    Disk utility is not good at repairing while the OS is loaded. You could try booting into single user mode by holding command S at the chime and then run /usr/sbin fsck -fy or /sbin/fsck -fy

     

    This has fixed bad drives for me in the past.

     

    http://www.howtogeek.com/236978/how-to-repair-disk-and-file-system-problems-on-y our-mac/

  • by bryanbenjy,

    bryanbenjy bryanbenjy Sep 23, 2016 5:05 PM in response to Trstam
    Level 1 (5 points)
    Mac OS X
    Sep 23, 2016 5:05 PM in response to Trstam

    is there any way of having the Apple diagnostic tool displaying on an external monitor for an iMac?

     

    my iMac display isnt working, horizontal lines coming up as per other thread, but I can't run the diagnostic test because it runs it before powering on an external display and I just can't see anything on my iMac screen.

     

    so wondered if there was a way of getting the diagnostic tool to run without the iMac screen?

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