14 Replies Latest reply: Jun 1, 2010 9:07 PM by k_design7
k_design7 Level 1 Level 1 (0 points)
Ok so I was using my computer as normal. I logged out of an email website, and then the computer completely shut down. When I pressed the power button to restart, I seen the green screen with the lil apple logo, and then a transition folded down the screen and then an error report appear.

http://img526.imageshack.us/img526/9713/imacerror.jpg this is a screen capture of the error.

Here is the jist of the error.

Panic(cpu 0 caller 0x46595d): "thread wants credential but has no BSD...etc"
Debugger called: <panic>
0x56c3db18: ..... .. ... a bunch more numbers

11 lines of those numbers.

BSD process name corresponding to current thread: unknown

MAC OS version:
not yet set

Kernal version:
Darwin kernel version 10.3.0: Fri Feb 26 11:58:09 PST 2010
System model: imac10.1 (mac-f2268dc8)

System uptime in nanoseconds: 658523724


This is the jist of what the screen capture says. I've tried to power down for several minutes, even unplugging the machine, and still when I try to reboot... Nothing.

I am very worried here. It was all of a sudden. I haven't downloaded or installed anything as of late that would cause any suspicion.

Any help would be greatly appreciated.

27-inch iMAC, Mac OS X (10.6.1), Latest Snow Leopard.
  • Carolyn Samit Level 10 Level 10 (101,445 points)

    I've tried to power down for several minutes, even unplugging the machine, and still when I try to reboot... Nothing.

    You can't reboot your iMac?

  • k_design7 Level 1 Level 1 (0 points)
    I've tried to power down for several minutes, even unplugging the machine, and still when I try to reboot... Nothing.


    What I meant was, I kept it turned off for several minutes, to make sure there was no residual energy lingering around, and when I pressed the button to turn it on, still nothing. It won't get past this screen... of death! lol
  • Carolyn Samit Level 10 Level 10 (101,445 points)

    Boot from your install disc. Run Disk Utility to verify and if necessary repair any errors on the startup disk.

    Insert your install disk and Restart, holding down the "C" key until grey Apple appears.
    Go to Installer menu and launch Disk Utility.
    Select your HDD (manufacturer ID) in the left panel.
    Select First Aid in the Main panel.
    (Check S.M.A.R.T Status of HDD at the bottom of right panel. It should say: Verified)
    Click Repair Disk on the bottom right.
    If DU reports disk does not need repairs quit DU and restart.
    If DU reports errors Repair again and again until DU reports disk is repaired.
    When you are finished with DU, from the Menu Bar, select Utilities/Startup Manager.
    Select your start up disk and click Restart

    While you have the Disk Utility window open, look at the bottom of the window. Where you see Capacity and Available. Make sure there is always 10% to 15% free disk space

  • k_design7 Level 1 Level 1 (0 points)
    Thank you for the reply! Ill try this when I get home from work, that is.. if I can find my disk.. lol!

    Also, am I able to use my keyboard while the computer is in this state?! I have the wireless bluetooth keyboard that came with the computer... Im just assuming that the keyboard doesn't have a connection with the computer until it's been semi-started up...
  • temnoff Level 1 Level 1 (0 points)
    take it in to apple, get a paper trail going with your serial number...otherwise you will be srew'ed
    also,it's a design flaw...remember all those pc with big exhaust areas to cool down the computer?? i guess there really is a reason for that since all imacs have a 1-3 year life span due to logic boards overheating and dying...
  • k_design7 Level 1 Level 1 (0 points)
    I really hope this isn't the case, that its dead...

    I have a lottaaa files on that computer. Im est. anywhere from 50-80,000 photos. I have a large collection over the years.

    I spoke with Apple on the phone, and I need to call them back tmrw to further follow up on it.

    Grrr, still frustrating, esp after spending $2100 for it.
  • Carolyn Samit Level 10 Level 10 (101,445 points)

    Yes. As long as the computer is turned on, your keyboard is active.

  • Carolyn Samit Level 10 Level 10 (101,445 points)
    it's a design flaw...remember all those pc with big exhaust areas to cool down the computer?? i guess there really is a reason for that since all imacs have a 1-3 year life span due to logic boards overheating and dying...

    Absolutely not true.

    Since you have so many images stored on the startup disk, when you boot from the install disc, make sure there is enough free disk spaces as I mentioned in a previous post.

    Surely you have backed up all your important data???

  • k_design7 Level 1 Level 1 (0 points)
    ... I know. Im in a pickle. I shloud have backed up alot sooner.

    So i tried those steps that u mentioned, and alot of them made sense and i was able to follow them to a t.

    i held c down, and waited for it to load. When that did, i opened du and selected my hd (macintosh hd) and then in the first aid tab, i seen a dialog field where the log is presented with four buttons at the bottom. Verify disk permissions. Repair disk permissions. Verfiy disk. Repair disk. Ive tried vefify disk. It went thru its thing and then in a green sentence in the log window. Then i exited back to utlities menu and u said to select startup manager, which i did not have. I did have startup disk.

    I selected that...and a long skinny windown that is prompting me to select a method for booting up.

    I have.. Mac os x 10.6.3 and another option for the dvd os and i see a network startup with a question mark icon.

    I selected the mac os 10.6.3 and hit the restart button. And the system begins to restart. And then it clicks few times ( not loud tho) and begins to boot up. It comes to the gray screen, with the centered apple logo, and then a transition slides down the screen with an error message.

    Even though im still stuck i did see a glimmer of hope. While i was fiddling around in the options, i selected the restore tab... And then half way down the page, i clicked 'image' , which then brings up a dialog window, its the explorer type thing to 'open' an image file. On the left side i see all my devices. I select my hd, then go to users, then down to my account, and i can then see all of my files and folders, but im unable to see any of them because the prompt window wants me to open a image file....

    But im guessing all my files r still intact but im need to find a method to access them some how. Or get the sy/53m to boot properly.

    Btw. Im typing all of this on my ipad. Ive had it for 3.5 days. Its a god send at this difficult time without my precious.

    Any other ideas?
  • Carolyn Samit Level 10 Level 10 (101,445 points)
    Did you check to see how much free disk space there was as I suggested before?

    Try Resetting the PRAM, instructions here.

  • k_design7 Level 1 Level 1 (0 points)
    I have 13 gbs free.. *bites lip*

    I did the method for restarting and holding down the cmd opt p and r, and it did make the computer restart and do the reboot sound, then the site tells you to take your fingers off those keys, it didnt load much after thst, because it went back to the original error screen... Gray screen of death.
  • temnoff Level 1 Level 1 (0 points)
    all the tricks and holding down all the buttons and hearing all the chimes aren't gonna fix it...it's the logic board. all the imacs are dying after a few years of use...the logic boards get too hot in that little so called well designed space...oops did i say well designed...i meant to say pretty looking machine...
    apple knows the problem but won't admit it.
    all i know is that everyone i know and the thousands of posts online of users are all having the same problem.
    apple keeps blaming the HD, but the HDs are, it's a design flaw that doesn't allow the logic board to cool down...
    BTW, i'm on my 2nd and last imac in less than two years...
  • Carolyn Samit Level 10 Level 10 (101,445 points)
    Ok... you need to take it in for service. 13GB's is cutting it too close.

    Do you have another Mac by chance? Not the iPad... another Mac?

  • k_design7 Level 1 Level 1 (0 points)
    Unfortunately, I do not have another MAC computer.

    So I think I have solved this issue, but I am still left confused as to what the error message states as the culprit of the issue that caused my computer to crash, and display the error screen (http://img526.imageshack.us/img526/9713/imacerror.jpg).

    What I did was, after I tried all of those steps that you had offered, I was left feeling that I was getting so close, but just not close enough to solve the issue. So this is what I did,...

    Pressed C upon startup, and waited for the next screen to load.

    Instead of going to Disk Utility and Startup Disk, I processed on the main screen ahead of me, which re-installed the OS.

    The information captions on these screens did not indicate that it would "leave" all current information intact while doing the re-install.

    But I read somewhere that if I did proceed to Restore the OS, it would only OVER-WRITE the existing Snow Leopard OS Files, and leave all settings/files intact. After my research, I felt confident that this solution would bare good news, so I proceeded with the next few steps to re-install the OS. After I selected the Macintosh HD drive (I had about 13gbs free), I selected next and I let the process go. It took about 50 minutes for the process to complete, and then I was prompted with a restart button.

    Restarted... and the computer rebooted back to the Login screen, with my ID still intact. Entered my password, and I was in. I was able to access all of my files, and I did a TIME MACHINE backup of the whole computer, which was 799 gbs of data.

    I actually had to leave the house while it was doing this backup because I had to go to work. Im curious, once the TIME MACHINE is done backing up all of my data to the external 1TB drive, will I be able to open the external drive and view all the files as if any other external harddrive, or do I need to re-apply these files in a manner like restoring from a Time machine backup? I've never done this before, but Im thankful that Im able to backup all of my information...

    Phew! - Scary day or so. Not to sound over dramatic, but I really would have been upset if I lost everything, esp after I bought a 1TB external HD a few weeks ago, for the purpose of backing everything up, but I just didn't find the time to do so,... which nearly bit me in the ***.

    Carolyn I really want to thank you for all your help. You were a fantastic help with this situation, and I really appreciate your time and effort. Im very thankful that there are people like yourself, out there on the internet, on forums dedicated to situations like this, with your knowledge and patience! Thank you kindly!!!

    --- if anyone could answer my question on the ablitiy to access files from time machine, that would be great!