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ivo gonzalez

Q: Imac turning off repeatedly

After updating to Yosemite my imac unexpectedly turns off and it happens very often. Does anybody know what could be the issue?

iMac, OS X Yosemite (10.10.3)

Posted on May 28, 2015 10:29 AM

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Q: Imac turning off repeatedly

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  • by Baby Boomer (USofA),

    Baby Boomer (USofA) Baby Boomer (USofA) May 28, 2015 12:25 PM in response to ivo gonzalez
    Level 9 (57,623 points)
    May 28, 2015 12:25 PM in response to ivo gonzalez

    Which model iMac do you have?

    CLICKY CLICK---> http://support.apple.com/kb/HT1758 How to identify iMac models

     

    User Tiphttps://discussions.apple.com/docs/DOC-3603 iMac SMC and PRAM reset

    http://support.apple.com/kb/HT3964 Intel-based Macs: Resetting the System Management Controller (SMC)

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

     

     

    Run Apple Hardware Test.

     

    ==========

     

    If you are still under warranty and/or have AppleCare, call them.  Let them deal w/it.

     

     

     

     

     

     

     

     

     

    Wave Siggy.gif

  • by ivo gonzalez,

    ivo gonzalez ivo gonzalez May 28, 2015 12:51 PM in response to Baby Boomer (USofA)
    Level 1 (0 points)
    May 28, 2015 12:51 PM in response to Baby Boomer (USofA)

    Thanks a lot for your help.

    I will try to reset the PRAM and NVRAM

    The Apple hardware test didn't identify any errors.

    My Imac is from january 2013.

  • by Linc Davis,

    Linc Davis Linc Davis May 28, 2015 1:45 PM in response to ivo gonzalez
    Level 10 (208,000 points)
    Applications
    May 28, 2015 1:45 PM in response to ivo gonzalez

    These instructions must be carried out as an administrator. If you have only one user account, you are the administrator.

    Launch the Console application in any of the following ways:

    ☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)

    ☞ In the Finder, select Go Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.

    ☞ Open LaunchPad and start typing the name.

    In the Console window, select

              DIAGNOSTIC AND USAGE INFORMATION System Diagnostic Reports

    (not Diagnostic and Usage Messages) from the log list on the left. If you don't see that list, select

              View Show Log List

    from the menu bar.

    There is a disclosure triangle to the left of the list item. If the triangle is pointing to the right, click it so that it points down. You'll see a list of reports. A panic report has a name that begins with "Kernel" and ends in ".panic". Select the most recent one. The contents of the report will appear on the right. Use copy and paste to post the entire contents—the text, not a screenshot.

    If you don't see any reports listed, but you know there was a panic, you may have chosen Diagnostic and Usage Messages from the log list. Choose DIAGNOSTIC AND USAGE INFORMATION instead.

    In the interest of privacy, I suggest that, before posting, you edit out the “Anonymous UUID,” a long string of letters, numbers, and dashes in the header of the report, if it’s present (it may not be.)

    Please don’t post other kinds of diagnostic report.

    I know the report is long, maybe several hundred lines. Please post all of it anyway.

    When you post the report, you might see an error message on the web page: "You have included content in your post that is not permitted," or "The message contains invalid characters." That's a bug in the forum software. Please post the text on Pastebin, then post a link here to the page you created.

  • by ivo gonzalez,

    ivo gonzalez ivo gonzalez Jun 1, 2015 12:54 PM in response to Linc Davis
    Level 1 (0 points)
    Jun 1, 2015 12:54 PM in response to Linc Davis

    Thanks for your answer, Linc but unfortunately I couldn't find the files you mentioned. I opened the console and on the left side I visualized

    Diagnostic and Usage Information

    Diagnostic and Usage Messages

    - (it is a triangle pointing to the right) User Diagnostic Reports

    - (it is a triangle pointing to the right) System Diagnostic Reports (the one you mentioned). I clicked the triangle to point it down but the list of reports does't contain any file beginning with "Kernel" nor ending with ".panic".

    Do you think I should reinstall the whole system?

    Thanks for your help.

    Regards

  • by Linc Davis,

    Linc Davis Linc Davis Jun 2, 2015 1:51 PM in response to ivo gonzalez
    Level 10 (208,000 points)
    Applications
    Jun 2, 2015 1:51 PM in response to ivo gonzalez

    What exactly happens when it "turns off?"

  • by ivo gonzalez,

    ivo gonzalez ivo gonzalez Jun 3, 2015 7:04 AM in response to Linc Davis
    Level 1 (0 points)
    Jun 3, 2015 7:04 AM in response to Linc Davis

    It only turns off when in sleep mode.

    I always leave the imac on sleep mode when I stop working.

    And a few hours later, when I try to use it, the computer is turned off.

    So I always have to turn it on again.

  • by Linc Davis,Solvedanswer

    Linc Davis Linc Davis Jun 3, 2015 9:05 AM in response to ivo gonzalez
    Level 10 (208,000 points)
    Applications
    Jun 3, 2015 9:05 AM in response to ivo gonzalez

    Step 1

    Take all the applicable steps in this support article. That's the starting point for any further efforts to solve the problem. Please read the whole article carefully and don't skip any of the steps, including the ones under the heading Learn more. If you don't understand any of the steps, ask for guidance.

    Also note that if you replaced the internal hard drive with an SSD, or if you're starting up from an external SSD, then that device may be causing the problem. Check the SSD manufacturer's website for a firmware update. The only solution may be to reinstall the original drive or avoid sleep altogether.

    Step 2

    If you're running OS X 10.8.5 or earlier, from the menu bar select

               ▹ System Preferences... ▹ Accessibility

    If the checkbox at the bottom marked

              Enable access for assistive devices

    is checked, uncheck it and test.

    If you're running OS X 10.9 or later, select

               ▹ System Preferences... ▹ Security & Privacy ▹ Privacy ▹ Accessibility

    If any applications are listed on the right and have a checked box next to them, uncheck all the boxes and test. You may first have to click the padlock icon in the lower left corner of the window and authenticate as an administrator to unlock the settings.

    Step 3

    In the Energy Saver pane of System Preferences, uncheck the box marked

              Put hard disks to sleep when possible

    Step 4

    If you don't already have a current backup, back up all data, then reinstall the OS.* You don't need to erase the startup volume, and you won't need the backup unless something goes wrong. If the system was upgraded from an older version of OS X, you may need the Apple ID and password you used.

    If you installed the Java runtime distributed by Apple and still need it, you'll have to reinstall it. The same goes for Xcode. All other data will be preserved.

    *The linked support article refers to OS X 10.10 ("Yosemite"), but the procedure is the same for OS X 10.7 ("Lion") and later.

    Step 5

    This and the next step must be taken as an administrator. If you have only one user account, you are the administrator.

    Launch the Console application in any of the following ways:

    ☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)

    ☞ In the Finder, select Go Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.

    ☞ Open LaunchPad and start typing the name.

    In the Console window, select

              DIAGNOSTIC AND USAGE INFORMATION Diagnostic and Usage Messages

    In the search box in the window's toolbar, enter "powerd" (without the quotes.)

    You may see one or more lines like this:

    com.apple.message.signature: Platform Failure

    If you do see that, and you did everything in the preceeding steps, then you're dealing with an internal hardware fault. Make a "Genius" appointment at an Apple Store, or go to another authorized service provider.

    Step 6

    In the Console window, select

              DIAGNOSTIC AND USAGE INFORMATION System Diagnostic Reports

    (not Diagnostic and Usage Messages) from the log list on the left. If you don't see that heading, select

              View Show Log List

    from the menu bar.

    There is a disclosure triangle to the left of the list item. If the triangle is pointing to the right, click it so that it points down.

    You may see one or more reports with a name that begins with "Sleep Wake Failure" followed by a date. Select the most recent one. The contents of the report will appear on the right. Use copy and paste to post the entire contents—the text, not a screenshot.

    I know the report is long, maybe several hundred lines. Please post all of it anyway.

  • by ivo gonzalez,

    ivo gonzalez ivo gonzalez Jun 4, 2015 7:50 AM in response to Linc Davis
    Level 1 (0 points)
    Jun 4, 2015 7:50 AM in response to Linc Davis

    Problem solved.

    I unchecked the "Put hard disks to sleep when possible" and reinstalled the OS and the issue hasn't happened so far.

    Thanks a lot.