MBA won't boot. Fans on high, no picture.

Discussion in 'MacBook Air' started by CashDude, Jul 26, 2014.

  1. CashDude macrumors regular

    Joined:
    Jun 21, 2010
    #1
    Mid 2011 11 inch MBA. May be related to recent firmware update. I have tried all of the keyboard tricks and nothing will boot it.

    I figured out that by doing the triple SMC reset and holding the power button for several seconds, I can get the fans to come on high, but nothing else happens.

    I opened it up and unplugged the battery for a bit, but still no change. I also removed the SSD, and still get the same symptoms whether it's left out or plugged back in.

    Does anyone know what this could be?

    I found 2 leads on other boards. One said that this happens when the temp sensors are faulting, and the other said it happens when the computer doesn't see an OS.

    Please send any suggestions.

    I am going to send it in, but they said they would have to wipe the SSD, which would really suck.
     
  2. nexus4life macrumors regular

    Joined:
    Jul 19, 2014
    #2
    You say no picture, by this do you mean the screen itself will not turn on? Or is the backlight on the screen coming on?
     
  3. mad3inch1na macrumors 6502a

    Joined:
    Oct 21, 2013
    #3
    I don't know how long you let your computer sit before messing with it, but sometimes, especially after an update, the fans will run without the screen turning on. One time something similar happened to me after an update on my 2012 13" MBP, and I just left it plugged in to a charger. 30 minutes later it just turned on.

    My motherboard also died on my 2010 13" MBA, but my computer was completely dead that time. If it is working at all, you may want to just let it sit while plugged in and turn it on after an hour or so. The backlight may also be dead. Check your screen very carefully to make sure it isn't on.

    Matt
     
  4. CashDude thread starter macrumors regular

    Joined:
    Jun 21, 2010
    #4
    There's definitely no picture at all. It does not seem to be a back light problem.

    I also left it plugged in all night and when I woke up, the fans were still on high and nothing had changed.
     
  5. nexus4life macrumors regular

    Joined:
    Jul 19, 2014
    #5
    So if there is nothing from the screen at all, it seems like you have a pretty big issue on your hands :/ - usually the backlight comes on at least. Now at the very least your screen is dead.

    Do you have applecare/ square trade? If not - ouch. That repair bill ...
     
  6. CashDude thread starter macrumors regular

    Joined:
    Jun 21, 2010
    #6
    I really doubt the screen is dead. The computer just doesn't seem to be booting up. The caps lock light doesn't come on, but the keyboard is working because I can SMC reset and turn it on/off.

    I have a repair lined up. But if anyone knew any tricks of how to get it running, I would rather not send it out for who-knows-how-long.

    Also does anyone know if this sounds like a thermal sensor issue or a badly corrupted firmware issue? Or none of the above? I have seen some complaints about this last firmware update on my model computer, but none being bricked this bad.
     
  7. nexus4life macrumors regular

    Joined:
    Jul 19, 2014
    #7
    http://appleinsider.com/articles/14/07/22/users-report-install-crashing-issues-with-latest-macbook-air-efi-update

    in the article, it said one user had a bricked MBA. Maybe you and that person had/have same issue.
     
  8. The Phazer macrumors 68030

    Joined:
    Oct 31, 2007
    Location:
    London, UK
    #8
    Exactly the same seems to have happened with my 2011 Macbook Air.

    Tried resetting the PRAM etc. Dead as a doornail.
     
  9. CashDude thread starter macrumors regular

    Joined:
    Jun 21, 2010
    #9
    Try my method and see if the fans come on high.

    Do the triple SMC reset and on the third one, don't release the power button. Keep it held down for about 15 seconds. Then release and push power again and see if they kick on.
     
  10. The Phazer macrumors 68030

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    Oct 31, 2007
    Location:
    London, UK
    #10
    It doesn't seem to trigger the fans, but it does cause the charging cable led to change from green to yellow.
     
  11. CashDude thread starter macrumors regular

    Joined:
    Jun 21, 2010
    #11
    I ordered a sata hard drive adapter from eBay and I'm going to try to copy my SSD over to a PC before I send it in for repair. I will let you know if it works in case you want to do the same thing.
     
  12. CashDude thread starter macrumors regular

    Joined:
    Jun 21, 2010
    #12
    So I sent it in, and they replaced the logic board. Is it possible that the botched firmware update fried my logic board? Or is it maybe just a coincidence?
     
  13. Mrbobb macrumors 601

    Joined:
    Aug 27, 2012
    #13
    Did the SMC update completed normally? Sounds like a botched bios update.
     
  14. nexus4life macrumors regular

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    Jul 19, 2014
    #14
    Hard to say, but it's unlikely to be anything other than the firmware update if everything was working normally prior to the update.
     
  15. The Phazer macrumors 68030

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    Oct 31, 2007
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    London, UK
    #15
    Same happened with mine.
     
  16. Ronnoco macrumors 68030

    Ronnoco

    Joined:
    Oct 16, 2007
    Location:
    United States of America
    #16
    I just want to note here that TWICE I've brought laptops that were having issues (one, no sound at all and the other had display issues) into the genius bar and both times they immediately said "bad logic board". BOTH times, I later found easy fixes for the issues online. The Geniuses seem to say "bad logic board" an awful lot.
    Not saying it wasn't the case for this, but it certainly was with mine (and others I've talked to). It's never a bad idea to get a 2nd, non genius bar opinion. Of course if the repair is completely covered by AppleCare then I guess it's fine (although I'm not crazy about having a 2nd logic board put in a fairly new laptop. i've run into problems with that in the past with non-matching serial numbers and other issues).
    Anyway, just my experience. I'm happy they fixed the issue for you.
     

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