1 2 Previous Next 27 Replies Latest reply: Apr 27, 2013 10:51 AM by rccharles
rmcmullen Level 1 Level 1 (0 points)

Hi,

 

I have a IMac G5 and when I turn the IMac on the loads the apple logo then it goes on to a blank ligh blue sceen and does not load anyting else.

 

Does any one know a solution. I think it is a logic board fault.

 

Thanks


iMac
  • 1. Re: IMac G5 Blue Screen Fault
    rccharles Level 5 Level 5 (5,370 points)

    Try a safe boot.

        Shutdown your machine.  Hold down the shift key.  Poweron.  Wait awhile Wait awhile while you harddrive

          is being checked.

        http://support.apple.com/kb/ht1455

     

    Could be a corrupt disk. Run Disk Utility.

     

     

    I suspect disk corruptions.

     

    verify & repair your startup drive

    To verify & repair you file system on the startup drive, you will need to run disk utility from you installation DVD.

     

    This article  will tell you how to get to disk utility.  Once in a disk utility, you can go and attempt to recover the disk.

    http://support.apple.com/kb/TS1417


    To repair your startup drive, you will need to run disk utility from your startup DVD.
    Mac OS X 10.4: About the utilities available on the Mac OS X 10.4 Install DVD

    http://support.apple.com/kb/HT2055

     

    How to run disk utility from your startup DVD.

    1. Insert your  startup DVD  into your reader.  Power down your machine.  Hold down to the c key.  Power on your machine.  This will bootup your startup DVD.
    2. This will bring you to a panel asking you for your language.  Pick your language.

    3.          /___sbsstatic___/migration-images/171/17185454-1.jpg
    4. You you come to the Install Mac OS panel.  Do not install.
    5. Click on Utilities menu item.  This will give you a pulldown list of utilities. /___sbsstatic___/migration-images/171/17185454-2.jpg
    6. Click on the disk utility.
    7. You are now in disk utility.  Pick your disk.  Click on repair it should be on the lower right of the panel. /___sbsstatic___/migration-images/171/17185454-3.jpg
    8. Once the repair completes successfully, you should update your permissions.

     

    --------------------------------------------------------

     

    Verify a disk

    As an alternative, you can verify that the filesystem on the disk is correct. You will not be able to repair the file system.

    I suggest that you use disk utility to verify that your startup disk is OK. 
    Macintosh-HD -> Applications -> Utilities -> Disk Utility 
    Start up disk utility.  On the left pane view, you will see a list of all your disks.  
    Click on your startup disk.
    Click on the First Aid  Tab.
    Click on verify.  

     

    Hopefully your disk will verify.  If not, you have to boot from your installation DVD and run Disk Utility from there to attempt to repair your file-system.

     

    --------------

    Format a disk

    Macintosh-HD -> Applications -> Utilities -> Disk Utility

     

    Start up disk utility.
    On the left pane view, you will see a list of all your disks.  Click on the external  disk.
    Click on the partition tab.

     

    http://farm4.static.flickr.com/3244/3134133820_27b82ea95f.jpg?v=0

     

     

    You will now see how your external disk is currently set up.  Fill in the information as appropriate. You should pick Mac OS Extended (Journaled).

     

    More details on formatting.
    http://www.kenstone.net/fcp_homepage/partitioning_tiger.html

     

     

    -------------------

     

    Format a disk using the installation DVD

    To format  the startup drive, you will need to run disk utility from your installation DVD.

     

    This article  will tell you how to get to disk utility.  Once in a disk utility, you can go and format the disk.

    http://support.apple.com/kb/TS1417


    To format your startup drive, you will need to run disk utility from your startup DVD.
    Mac OS X 10.4: About the utilities available on the Mac OS X 10.4 Install DVD

    http://support.apple.com/kb/HT2055

     

    How to run disk utility from your startup DVD.

    1. Insert your  startup DVD  into your reader.  Power down your machine.  Hold down to the c key.  Power on your machine.  This will bootup your startup DVD. ( Alternatively, you may hold down the control key, this brings up the startup manager. Click on the desired volume. Click on the right arrow. )
    2. This will bring you to a panel asking you for your language.  Pick your language.
    3. /___sbsstatic___/migration-images/171/17185454-1.jpg

    4. You you come to the Install Mac OS panel.  Do not install.
    5. Click on Utilities menu item.  This will give you a pulldown list of utilities. /___sbsstatic___/migration-images/171/17185454-2.jpg

    6. Click on the disk utility.
    7. Start up disk utility.
      On the left pane view, you will see a list of all your disks.  Click on the external  disk.
      Click on the partition tab.


      http://farm4.static.flickr.com/3244/3134133820_27b82ea95f.jpg?v=0



    8. You will now see how your external disk is currently set up.  Fill in the information as appropriate. You should pick Mac OS Extended (Journaled).

     

     

     

    More details on formatting.
    http://www.kenstone.net/fcp_homepage/partitioning_tiger.html

  • 2. Re: IMac G5 Blue Screen Fault
    rmcmullen Level 1 Level 1 (0 points)

    Ok Thanks

  • 3. Re: IMac G5 Blue Screen Fault
    rmcmullen Level 1 Level 1 (0 points)

    Hi,

     

    I have managed to get the operating system that caused the blue screen fault. I took it to the apple shop and they reinstalled it. Now the screen is going fuzzy with lines and the man in the apple shop said it was the graphics card but where would you find that on a imac G5 and how would get one because apple have stopped selling them.

     

    Thanks

     

    R

  • 4. Re: IMac G5 Blue Screen Fault
    rmcmullen Level 1 Level 1 (0 points)

    Hi,

     

    I have managed to get the operating system working there was data corupted on the hardrive that caused the blue screen fault. I took it to the apple shop and they reinstalled it. Now the screen is going fuzzy with lines and the man in the apple shop said it was the graphics card but where would you find that on a imac G5 and how would get one because apple have stopped selling them.

     

    Thanks

     

    R

  • 5. Re: IMac G5 Blue Screen Fault
    Baby Boomer (USofA) Level 9 Level 9 (55,575 points)

    rmcmullen wrote:

     

    Hi,

     

    the man in the apple shop said it was the graphics card but where would you find that on a imac G5 and how would get one because apple have stopped selling them.

     

    Thanks

     

    R

     

    That would depend on which model/generation G5 iMac you have.

    http://docs.info.apple.com/article.html?artnum=301724-en How to identify your iMac

     

     

     

    iMac G5 Take Apart Instructions

     

    We Love Macs!















    /___sbsstatic___/migration-images/172/17290064-1.gif

  • 6. Re: IMac G5 Blue Screen Fault
    rccharles Level 5 Level 5 (5,370 points)

    See if you display is fine in safemode.  poweroff.  hold down the shift key. poweron.

     

    If so...

     

    Running in Safe mode leaves out some video drivers.  Which results in machine not using advanced video hardware. You can run in normal mode but using the safe mode video drivers.For more details see:

     

    https://discussions.apple.com/message/16057567#16057567

     

    Look through this thread. see the second page.  You don't have to read through the first page.  Just go to the part where I try a solution that works.

     

    Robert

  • 7. Re: IMac G5 Blue Screen Fault
    rmcmullen Level 1 Level 1 (0 points)

    Hi,

     

    The graphics are not fuzzy on safe Mode so how do I get them working on normal mode.

     

    Thanks

     

    R

  • 8. Re: IMac G5 Blue Screen Fault
    rmcmullen Level 1 Level 1 (0 points)

    Hi Robert,

     

    Would I use this option:

     

     

     

    I also tried reinstalling the OS - no luck there either.

     

    What is safe boot?

    http://support.apple.com/kb/ht1564

     

    I'd look at what extra is added to a normal boot over safe boot.

     

    Did you reformat your harddrive.  Maybe you have a corrupt hd.  Could you try running off an external hd?

     

    Big mystery to me!

     

     

    Thanks

     

    R

  • 9. Re: IMac G5 Blue Screen Fault
    rmcmullen Level 1 Level 1 (0 points)

    Robert,

     

    Could you please show me how to do this via screen dumps so i don't break the computer system.

     

    Thanks

     

    R

  • 10. Re: IMac G5 Blue Screen Fault
    WZZZ Level 6 Level 6 (12,225 points)

    The Graphics Card is soldered to the Logic Board. This means a new Logic Board, which if you could find one -- and I doubt you could -- would be prohibitively expensive. A used one might have the same problem or soon develop the same problem.

  • 11. Re: IMac G5 Blue Screen Fault
    rmcmullen Level 1 Level 1 (0 points)

    Hi,

     

    Does any one have simple steps to put the graphics dirves from safe mode to normal mode because my screen is still fuzzy on normal mode and it is not on safe mode.

     

    Thanks

     

    R

  • 12. Re: IMac G5 Blue Screen Fault
    rmcmullen Level 1 Level 1 (0 points)

    What is ATI mean

     

    R

  • 13. Re: IMac G5 Blue Screen Fault
    rccharles Level 5 Level 5 (5,370 points)

    You need to verify that you have an ATI video hardware.  It will appear as ATY. 

     

    ATI

    a division of ADM

    http://www.amd.com/us/products/Pages/graphics.aspx

     

    ATI Radeon™, ATI Mobility Radeon™, ATI FirePro™

     

    ATI makes video cards and process to display information on you computer display.

     

     

    Meanwhile,

     

    You may want to post machine info.

    blue apple > about this mac > more info button. Click on the hardware line. It has a little triangle in front of the work hardware.

     

    Leave out the serial number.

     

    Example:

    Machine Name: iMac

    Machine Model: PowerMac4,1

    CPU Type: PowerPC 750 (33.11)

    Number Of CPUs: 1

    CPU Speed: 600 MHz

    L2 Cache (per CPU): 256 KB

    Memory: 768 MB

    Bus Speed: 100 MHz

    Boot ROM Version: 4.1.9f1

     

    You could also post info on your video hardware:

     

    Picture 2.png

  • 14. Re: IMac G5 Blue Screen Fault
    rccharles Level 5 Level 5 (5,370 points)

    To try:

    1) Make a backup of your files.  You may want to backup your complete system.

     

    2) Create a new folder.  I made /System/Library/ExtensionsDisabled

     

    3) move all the files starting with ATI in folder /System/Library/Extensions to the new folder /System/Library/ExtensionsDisabled

     

    a) goto the Finder   then type

      shift + command + g

    b) type in

        /System/Library/Extensions

    c) press return

    d) This will list the files in the Extensions folder

    e) click on the first ATI file

    f) hold down the shift key

    g) click on the last ATI file

    h) drag these files to the new folder

     

    Picture 1.png

     

     

    4) do a normal boot.

     

    Notice the current data on these files & folders.

     

    Libary-Extensions.png

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