Resolved iMac would not boot and solution with question

Discussion in 'iMac' started by AppleFan360, Jun 24, 2014.

  1. AppleFan360 macrumors 68020

    Jan 26, 2008
    I had something interesting happen yesterday. I went to turn on my late 2013 27" iMac and it would not boot. I got the Apple logo and the spinning icon but it would just stay on that screen and not do anything.

    I tried all of the normal stuff. Unplug all peripherals, reset NVRAM, repaired permissions, repaired disc and checked hardware (cmd-d). All came out fine.

    Obviously the hard drive (1 TB Fusion) and all of the hardware was working so it had to be a software issue.

    So as a last ditch effort, I went into the recovery partion and re-installed Mavericks (leaving the data in place) and Voila! The iMac booted up perfectly and is running better than ever.

    My question. Usually I keep things pretty clean on this iMac. Occasionally I will empty the trash, repair permission and check the interal HD. I noticed that when I re-installed Mavericks, I gained about 30GB worth of hard drive space. Is there a cache somewhere in this OS that also needs to be cleaned that might have caused this issue? I've been using iMacs since 2006 and this is the first time this has happened. Really weird.

  2. Weaselboy Moderator


    Staff Member

    Jan 23, 2005
    Yes... there are some cache and swap files that get deleted when doing a reinstall, but they will be recreated after you use your Mac a bit. There is no need to manually do anything with them and that definitely would not have caused your no boot issue.

    Unless you recently installed some software that is incompatible and caused this, I would say you have an impending hardware issue of some sort... maybe a drive failure on the way.

    If you did not install anything that caused this, your Mac would not just spontaneously not boot for no reason. If I were you I would take it in to Apple to have them check it out for you.

    Hopefully you have a good backup in place in case the drive(s) die.
  3. AppleFan360 thread starter macrumors 68020

    Jan 26, 2008
    I can't think of anything I installed recently that might cause this. Yes, I do keep a Time Machine backup. I think I'm going to take a wait and see attidude. If it happens again out of nowhere, I will take it to Apple.

  4. BrianBaughn macrumors 603


    Feb 13, 2011
    Baltimore, Maryland
    A couple (out of many more most likely) possibilities I can think of are:

    1. Your iMac may have had some corrupted system files due to a bad shutdown or power outage.
    2. The hard drive may have a bad sector on it. The reinstall may have skipped or missed the bad sector but it's possible it will rear its head again in the future.
  5. AppleFan360 thread starter macrumors 68020

    Jan 26, 2008
    I was thinking #1. There are times when I will turn on the iMac real quick to check e-mail then turn it right back off. Maybe some background stuff was running during shutdown that didn't complete. It's very well possible I could have a bad sector as well. Just have to wait and see. I will update this thread as necessary.
  6. rambo47 macrumors 6502a


    Oct 3, 2010
    Denville, NJ
    I agree with a corruption problem, must likely caused by a power surge or an improper shutdown (like in a power outage).
  7. SaSaSushi macrumors 68040


    Aug 8, 2007
    Takamatsu, Japan
    Not obviously, I'm afraid. The Apple Hardware Test can often miss hardware issues. I agree with Weaselboy that I would definitely take/send it in to Apple just in case. Of course, it may have just been a corrupted file as well.

    So long as you have a complete backup of your data, but I would definitely have Apple take a look at it before any coverage expires.
  8. khedden macrumors member

    Jun 18, 2014
    Charleston, SC
    I had this happen with a 2006 iMac a few years ago. I re-installed the OS and everything seemed fine... until it happened again a few months later. Again I re-installed, and it happened yet again shortly thereafter.

    After that, I replaced the HDD and its been fine ever since.
  9. AppleFan360 thread starter macrumors 68020

    Jan 26, 2008
    I have a question. Could memory issues cause something like this as well? I came across a few support articles on the Apple site regarding memory issues. I was thinking about reseating the memory.

    I have a total of 32 GB of memory. Two of the sticks are Apple memory and the other two are crucial memory that I purchased off Amazon that are supposed to be 100% compatible.

    Oh and by the way, I occasionally get kernel panics as well.
  10. Weaselboy Moderator


    Staff Member

    Jan 23, 2005
    It is possible. Bad memory can cause disk corruption and then the disk corruption might cause the no boot problem.
  11. jg321 macrumors 6502

    Aug 29, 2012
    What is this obsession everyone has with repairing permissions?! I've never once had to do this, and I use a Mac every single day at work, and have multiple personal ones. From Snow Leopard to Mavericks, I've never needed to do this.

    Edit: Oh yeah, and I'd suspect faulty hard drive. Memory is possible, but less likely to "go bad". A hard drive however is very likely to go bad; they all do at some point!
  12. SaSaSushi macrumors 68040


    Aug 8, 2007
    Takamatsu, Japan
    I'm using the exact same Crucial RAM in the exact same configuration and the first set I got had a bad module. I ended up returning it to Amazon for an exchange and the second set has been perfect for 4 months now.

    Bad RAM is the leading cause of them.

    Grab a copy of Memtest86 and make a boot disc. If you run it in Parallel CPU mode you should know pretty soon if there's a bad memory module.

    Alternatively, if you remove the Crucial and the problems resolve, it's another good indication that you need a replacement.

    Incidentally, the first set of Crucial I got and had problems with was low density (8 memory chips on each side of the DIMM) and the replacement I've had no problems with is the high density version of the same part (4 chips each side).
  13. AppleFan360, Jul 9, 2014
    Last edited: Jul 10, 2014

    AppleFan360 thread starter macrumors 68020

    Jan 26, 2008
    Can someone take a look at this Kernel Panic and tell me what they think? It happened when I started the computer. Yes, I plan to get with Apple support tomorrow. Just wanted to see what you guys thought.

    Wed Jul 9 22:07:36 2014
    panic(cpu 3 caller 0xffffff80016dc24e): Kernel trap at 0xffffff8001a4c54e, type 13=general protection, registers:
    CR0: 0x000000008001003b, CR2: 0x000000010b601000, CR3: 0x0000000004407000, CR4: 0x00000000001606e0
    RAX: 0xffffff8035d070c0, RBX: 0xffffff8001d03638, RCX: 0xffffff8001c69010, RDX: 0xffffff8031d10cf0
    RSP: 0xffffff82cf813c80, RBP: 0xffffff82cf813ca0, RSI: 0xffffff8001d03638, RDI: 0xffffff8035d07080
    R8: 0x000000000000005d, R9: 0xffffff8001c01910, R10: 0x00000000000003ff, R11: 0xffffffffffffffff
    R12: 0xffffff7f81dfb54e, R13: 0xffffff8035cca400, R14: 0x0000000000000000, R15: 0xffffff8035d07080
    RFL: 0x0000000000010282, RIP: 0xffffff8001a4c54e, CS: 0x0000000000000008, SS: 0x0000000000000010
    Fault CR2: 0x000000010b601000, Error code: 0x0000000000000000, Fault CPU: 0x3

    Backtrace (CPU 3), Frame : Return Address
    0xffffff82c2685df0 : 0xffffff8001622f79
    0xffffff82c2685e70 : 0xffffff80016dc24e
    0xffffff82c2686040 : 0xffffff80016f3746
    0xffffff82c2686060 : 0xffffff8001a4c54e
    0xffffff82cf813ca0 : 0xffffff7f81dd6993
    0xffffff82cf813cf0 : 0xffffff7f81dd67ce
    0xffffff82cf813d50 : 0xffffff7f81dd6cc0
    0xffffff82cf813dc0 : 0xffffff7f81dc4dbe
    0xffffff82cf813e00 : 0xffffff7f81dcecfe
    0xffffff82cf813e40 : 0xffffff8001a954e9
    0xffffff82cf813ea0 : 0xffffff8001a94cfa
    0xffffff82cf813f30 : 0xffffff8001a90e89
    0xffffff82cf813f70 : 0xffffff8001a95e03
    0xffffff82cf813fb0 : 0xffffff80016d7417
    Kernel Extensions in backtrace:[994495B5-FB34-3DB5-B47A-D2A732E52F33]@0xffffff7f81dc1000->0xffffff7f81e32fff

    BSD process name corresponding to current thread: kernel_task

    Mac OS version:

    Kernel version:
    Darwin Kernel Version 13.3.0: Tue Jun 3 21:27:35 PDT 2014; root:xnu-2422.110.17~1/RELEASE_X86_64
    Kernel UUID: BBFADD17-672B-35A2-9B7F-E4B12213E4B8
    Kernel slide: 0x0000000001400000
    Kernel text base: 0xffffff8001600000
    System model name: iMac14,2

    System uptime in nanoseconds: 8070116241
    last loaded kext at 5467017724: 80.14 (addr 0xffffff7f83c72000, size 77824)
    loaded kexts:
    com.quark.driver.Tether64 1.1.0d3
    com.Logitech.Unifying.HID Driver 1.3.1
    com.hzsystems.terminus.driver 4
    com.logmein.driver.LogMeInSoundDriver 1.0.3
    com.Logitech.Control Center.HID Driver 3.9.1 80.14 1.9.5d0 3.0 4.2.6f1 4.0.6 124 3.6.22 2.6.3f4 2.6.3f4 2.6.3f4 2.0.9d6 100.14.28 1.0.0 1.60 3.5.13 4.2.1b5 8.2.6 8.2.8 1.0.0d1 1.1.2 1.0.0 7.0.0 1 104 1.7.0 8.2.8 8.2.6 2.0.4d1 4.2.6f1 4.2.6f1 3.6.22 170.3.5 1.2.5 3.6.6 380 3.0.1 1.0.0d1 1.0.0d1 1.0.0d1 35 683.4.0 404 5.0.2 2.6.0 1.5.2 3.8.1b2 842.21.65 3.0.5 683.4.0 2.0 2.0 1.8 2.1 2.0 1.7 153 3 245.13 1.0 10.0.7 2.6.3f4 1.0.0 98.22 8.2.6 8.2.6 1.9.7fc2 1.14 91.1 1.0.0 2.1.3 3.6.22 98.22 2.2.6 2.6.3f4 2.6.3f4 1.0.12d1 1.0.0 3.1.8 5.7.1d6 4.2.6f1 3.6.22 1.0.4 2.4.1 1.0.12d1 2.4.1 3.6.6 3.6.0 3.6.6 4.2.6f1 4.2.6f1 660.4.0 650.4.0 656.4.1 3.1.7 3.1.7 3.1.7 1.4.5 1.4.5 380 660.4.2 4.5.5 2.0.1 3.3.1 1.0.3b4 640.36 1.0.1b5 3.2 2.6.5 683.4.0 2.0 2.0 2.0.0 1.1 278.11.1 1.0.0d1 7 2 371.1 1.9 23 28.30 2.0 2.9 1.4 1 1.0
    Model: iMac14,2, BootROM IM142.0118.B00, 4 processors, Intel Core i7, 3.5 GHz, 24 GB, SMC 2.15f2
    Graphics: NVIDIA GeForce GTX 780M, NVIDIA GeForce GTX 780M, PCIe, 4096 MB
    Memory Module: BANK 0/DIMM0, 4 GB, DDR3, 1600 MHz, 0x802C, 0x384B54463531323634485A2D314736453220
    Memory Module: BANK 1/DIMM0, 4 GB, DDR3, 1600 MHz, 0x802C, 0x384B54463531323634485A2D314736453220
    Memory Module: BANK 0/DIMM1, 8 GB, DDR3, 1600 MHz, 0x859B, 0x43543130323436344246313630422E433136
    Memory Module: BANK 1/DIMM1, 8 GB, DDR3, 1600 MHz, 0x859B, 0x43543130323436344246313630422E433136
    AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x111), Broadcom BCM43xx 1.0 (
    Bluetooth: Version 4.2.6f1 14216, 3 services, 23 devices, 1 incoming serial ports
    Network Service: Ethernet, Ethernet, en0
    PCI Card: pci11c1,5901, IEEE 1394 Open HCI, Thunderbolt@196,0,0
    PCI Card: pci1b21,612, AHCI Controller, Thunderbolt@10,0,0
    Serial ATA Device: APPLE SSD SD0128F, 121.33 GB
    Serial ATA Device: APPLE HDD ST1000DM003, 1 TB
    Serial ATA Device: WDC WD20EURS-63S48Y0, 2 TB
    Serial ATA Device: WDC WD20EURS-63S48Y0, 2 TB
    USB Device: BRCM20702 Hub
    USB Device: Bluetooth USB Host Controller
    USB Device: FaceTime HD Camera (Built-in)
    USB Device: USB2.0 Hub
    USB Device: USB 2.0 Hub [MTT]
    USB Device: CRDA103-461
    USB Device: USB Receiver
    USB Device: Silicon Media R/W
    USB Device: USB 2.0 Hub [MTT]
    USB Device: Officejet Pro 8500 A910
    USB Device: USB 2.0 Hub [MTT]
    USB Device: USB 2.0 Hub [MTT]
    FireWire Device: unknown_device, Unknown
    Thunderbolt Bus: iMac, Apple Inc., 23.10
    Thunderbolt Device: My Book Thunderbolt Duo, Western Digital, 1, 26.2
    Thunderbolt Device: Thunderbolt to FireWire Adapter, Apple Inc., 3, 5.6
  14. SaSaSushi macrumors 68040


    Aug 8, 2007
    Takamatsu, Japan
    If it is a software issue, it is likely to be associated with one of these third party drivers. The first one I'd try to remove is the driver at the top of the list to see if that helps.
  15. Intell macrumors P6


    Jan 24, 2010
    To further go upon what SaSaSushi said, it appears to be a HID device that causing your problems. Try moving the Logitech extensions as well.
  16. AppleFan360 thread starter macrumors 68020

    Jan 26, 2008
    I've been on the line with Apple support and they suggested 2 things.

    1. Try a different USB Hub. Apparently some USB hubs can cause issues like this.

    2. Do a complete erase and restore (last resort).

    They said it still could be memory but try the USB hub first. Not a bad idea since my current hub can be a bit flakey (pretty rare however).

    I know there are numorous threads here about which hub to use but do you guys have any suggestions? I need a USB 3 hub with 7 ports or more.

  17. yjchua95 macrumors 604

    Apr 23, 2011
    GVA, KUL, MEL (current), ZQN
    7 ports or more?! :O

    How about a Belkin Thunderbolt dock? It's only got 3 USB ports, but has a lot more other ports (TB port, Gigabit RJ-45 Ethernet, audio in, audio out, FW800).
  18. AppleFan360, Aug 31, 2014
    Last edited: Sep 4, 2014

    AppleFan360 thread starter macrumors 68020

    Jan 26, 2008
    Just to follow up on this thread. It turns out the issue is the Crucial RAM I purchased from Amazon. I removed the Crucial RAM from my iMac and it's been running smooth as silk with no Kernel panics at all. I'm currently in the process of getting the RAM replaced by Crucial. Will follow up again after.
  19. rei101 macrumors 6502a

    Dec 24, 2011
    The same happens to me with my 2010 iMac after I installed a Mavericks update 3 months ago. In my case the computer was running slow, taking ages to do anything, beach ball every where. Until one day it didn't power up.

    To make long story short... I deleted the drive and installed Snow Leopard and everything fine.

    It is a problem with Maverick 100% sure because I never had that issue since OS9 or 8.5 back in the 90s. A OS glitch that is random.

    I even used Disk Warrior and everything looked fine. The bug is sort of random, I have seen discussions in here with the same problem. It looks like hard drive failure but is not.

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