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  1. #1

    Member Since
    Nov 15, 2010
    iMac5,1 Intel Core 2 Duo 2.16GHz 1GB of memory
    Exclamation iMac only starts in Safe Mode
    Hello there,
    First, here are my iMac's specs:
    Model Identifier: iMac5,1
    Processor Name: Intel Core 2 Duo
    Processor Speed: 2.16GHz
    Number of processors: 1
    Total Number of cores: 2
    L2 Cache: 4MB
    Memory: 1GB
    Bus Speed: 667MHz
    Boot ROM Version: IM51.0090.B09
    SMC Version: 1.9f4

    Hopefully that's enough information (I'm not the biggest computer guru).

    My iMac hasn't been running very well for awhile (crashes, freezes, slow, etc). I thought uninstalling Fan Control (downloaded, not originally part of computer) would maybe help. After I uninstalled it, things really got messed up. It took several start-ups to actually get into the system and the screen has horizontal lines and what appear to be dead pixels. I was able to reinstall Fan Control, but that still didn't help.
    After that, I decided to back everything up, erase the harddrive and start fresh. I first tried reinstalling OS X 10.4.7 (the original disk that came with my computer). The computer still kept crashing, so I held down the power button and restarted in Safe Mode. I was able to reinstall OS X, so then I tried reinstalling Leopard. The same thing happened, and I had to start-up in Safe Mode.
    Below is a list of things I tried (I did a lot of Google searching):

    Repair Disk with Disk Utility from start-up disks (both Leopard and the original disk)

    Reset PRAM (I'm not sure if I got this to work. I followed what the forums said, but still no luck)

    Clear out start-up items (there was nothing in either folder)

    Ran Apple Hardware Test (it didn't find any problems)

    I tried starting-up normally again and the little grey circle with a line came up. Now I'm only able to start up in Safe Mode.

    Any ideas on what I can do?

  2. #2

    Buzzard2010's Avatar
    Member Since
    Oct 22, 2010
    Bretforton, Worcestershire
    MacBook Pro 15" 2014, 2.2GHz i7, 16GB RAM, 250GB SSD, OSX 10.9.5 - iPhone 5s 16gb
    Could be numerous things going wrong there, but certainly sounds more like a hardware problem rather than a software one.

    1: Could be a bad HDD that's dying on you, not too much too replace and could solve the problem.

    2: Could be bad RAM at the root cause and also not too expensive to replace.

    3: Could be a GPU problem which is a lot more expensive and not really user-replaceable, you would probably want to get to an Apple store to get this fixed.

    Hope this helps a little

    - Simon

    If you have been helped, don't forget to use the Reputation system at the top right of their post.
    May 2011
    Nominated: March 2011 & April 2011

  3. #3

    Member Since
    Nov 15, 2010
    iMac5,1 Intel Core 2 Duo 2.16GHz 1GB of memory
    Thanks a bunch (such a quick reply). Is there an easy way to figure out what the hardware problem might be?

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