6 Replies Latest reply: Jul 28, 2013 6:47 PM by Linc Davis
kayscomputer Level 1 (0 points)

I got my iMac in 2011 & have never updated it, so I'm not sure what software it runs on. I'm sure my password is correct because when i type it incorrectly, the box shakes as it should, but when I type it correctly, it's accepted & takes me to a white screen for a few seconds before returning to the login screen. I would really appreciate all the help I can get, please


iMac
  • Baby Boomer (USofA) Level 9 (57,297 points)

    kayscomputer wrote:

     

    I got my iMac in 2011 & have never updated it, so I'm not sure what software it runs on.

    Read KB Article http://support.apple.com/kb/HT1159 Mac OS X versions (builds) for computers and post the information.

     

    I'm sure my password is correct because when i type it incorrectly, the box shakes as it should, but when I type it correctly, it's accepted & takes me to a white screen for a few seconds before returning to the login screen. I would really appreciate all the help I can get, please

    In the meantime, try zapping the PRAM.

    http://support.apple.com/kb/HT1379 Resetting your Mac's PRAM and NVRAM

     

     

     

     

     

     

     

     

     

     

     

     

     

     

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  • baltwo Level 9 (62,215 points)
  • Linc Davis Level 10 (192,559 points)

    Please read this whole message before doing anything.

    This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.

    The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, by a peripheral device, or by corruption of certain system caches.

     

    Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards. Boot in safe mode and log in to the account with the problem. Note: If FileVault is enabled, or if a firmware password is set, or if the boot volume is a software RAID, you can’t do this. Ask for further instructions.
       
    Safe mode is much slower to boot and run than normal, and some things won’t work at all, including sound output and  Wi-Fi on certain iMacs. The next normal boot may also be somewhat slow.

    The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.

     

    Test while in safe mode. Same problem?

     

    After testing, reboot as usual (i.e., not in safe mode) and verify that you still have the problem. Post the results of the test.

  • kayscomputer Level 1 (0 points)

    I just tried logging in with Safe Mode, but the issue still remains, even when I rebooted afterwards. After entering my password, the screen still flashes white for a second or two before returning to the log in screen. Any ideas as to what I should do next?

  • kayscomputer Level 1 (0 points)

    Also, thank you for replying, sir. I really really appreciate it!

  • Linc Davis Level 10 (192,559 points)

    Back up all data if you haven’t already done so. There are ways to back up, even if you can’t log in. Before proceeding,you must be sure you can restore everything to the state it’s in now. If you’re not sure you can do that, STOP.

     

    The procedure below may spare you the need for a clean reinstallation of OS X. If you don't feel comfortable carrying it out, don't. try.

     

    Briefly, you need to delete the following file:

     

    /var/audit/current

     

    If you already know how to do that, you can skip the rest of this message. Do it, and try again to log in.

     

    Boot in single-user mode by holding down the key combination command-S at the startup chime. If you’re using an external USB keyboard, it must be plugged directly into a built-in port on the Mac, not into a hub. Release the keys when you see a black screen with scrolling white text. In this mode, there’s no graphical interface; just a command line. Initially, you can’t make any changes to files.

     

    When the text stops scrolling, and you see a line ending in a pound sign (“#”), type the following command:

    mount -uw /

     

    You must type the command exactly as given, with no mistakes. If you don’t feel able to do that, STOP. At this stage, no harm will be done if you make a mistake, but later, it will be. Press the return key.

     

    Next, type the following command:

    rm -i /var/audit/current

     

    Press return. You should get the following output:

    remove /var/audit/current?

     

    If that's not what you get, STOP. Type the single letter N, press return, and try again. Otherwise, type the single letter Y and pressreturn.

     

    Finally, enter the command:

    exit

     

    Press return. The text will start scrolling again, and then the system will reboot. Try again to log in.

     

    Credit for this solution to ASC user AnthonyTW.