6 Replies Latest reply: Dec 6, 2010 11:10 AM by MGW
ac23 Level 1 Level 1 (0 points)
Hi I've had my imac for just under 3 years now I think?
apologies if it isn't the G5 model.
Recently I noticed the mac had started getting a lot slower
than usual, I put this down to the many Photoshop files on the hard-drive, later deleting around 90 percent of them....The computer was back to speed,
Until one morning when I booted it up and a white screen with a flashing folder appeared, I restarted the system and it went back to normal but seemed a lot lot slower once again. The screen has happened a few times now and upon research people have reported a clicking noise when this screen appears? I luckily do not get this, just a frozen screen.
I then further looked into it and people reported that a re-install of the software should fix it, as the flashing folder is the imac looking for the HD?
I re-installed which at first seemed to fix it, until about 20 minutes after.
I do occasionally get the blank screen and flashing folder now, but more the computer literally freezes 24/7 Countless times, the only option being to force a restart. Sorry for the long winded topic, it just seems easier to explain this how you would say it when the help you need isn't in front of you, so you get the better picture

To sum up; The imac got the white screen and flashing folder numerous times, but can eventually get around this and log on as usual. When logged on however, it's constantly freezing for even the most simple tasks leaving me to shut it down forcefully.
I have re-installed the software once which at first seemed to have fixed it, but later proved wrong. The only usb peripherals being used are my keyboard and mouse.

Any help/fixes would be much appreciated thanks.

  • MGW Level 7 Level 7 (27,020 points)
    Welcome to Discussions - Please make sure that you have a bootable clone as soon as possible, your internal drive is failing and you will lose all your data.

    If your computer is only three years old, it's an intel, but the same instructions apply - back up!!!

    You can try running Disk Utility

    1. Insert the Mac OS X Install disc that came with your computer, then restart the computer while holding the C key.
    2. When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu. (In Mac OS X 10.4 or later, you must select your language first.)
    Important: Do not click Continue in the first screen of the Installer. If you do, you must restart from the disc again to access Disk Utility.
    3. Click the First Aid tab.
    4. Click the disclosure triangle to the left of the hard drive icon to display the names of your hard disk volumes and partitions.
    5. Select your Mac OS X volume.
    6. Click Repair. Disk Utility checks and repairs the disk.

    and/or the Apple Hardware Test, also on your install disk to pinpoint your problem. If you have access to Diskwarrior, that would be a good tool to use.

    If you have AppleCare, call them, since you should still be covered if the machine is less than three years old.

    Please post back with results,

  • ac23 Level 1 Level 1 (0 points)
    Sorry for the late reply, I'll be doing these steps before
    I go to sleep and shall update this post within the next 24 hours at the very most, so check back and I'll let you know
  • ac23 Level 1 Level 1 (0 points)
    Ok here's an update:

    I followed the steps you said and briefly wrote down notes of error messages, whilst verifying the HD I received the following;

    Incorrect number of thread records

    Invalid leaf number count

    Invalid volume file count

    The volume Macintosh Hd needs to be repaired.

    ERROR: filesystem verify or repair failed

    This was self explanatory So i continued and begun the repair disk.

    Error messages were as follows;

    checking catalogue hierarchy

    missing thread record

    invalid directory count

    should be 0 not 7

    missing thread record

    " " "

    A series of these messages came up with other saying it should be

    0 not 25,

    0 not 26

    It then said Invalid node structure

    Volume check failed

    This took around an hour and 20 minutes too complete the checks,
    I attempted to try this again after some sleep but the HD wasn't always appearing as an option to scan, just the install disc and a local network.
    I will continue to attempt this and shall post any more updates asap,
    as for now I've managed to log on my user fine and so far so good....
    hopefully the details posted may mean something to you, to me it tells me something is wrong and that is as far as I know

  • MGW Level 7 Level 7 (27,020 points)
    DiskWarrior or Drive Genius or TechToolPro can repair your corrupted directory, but here's a rather convoluted way to do it if you can actually boot from your internal drive and don't have access to one of those basic, valuable tools: [http://hints.macworld.com/article.php?story=20070204134513557]

    You might also take a look at Dr Smoke's Resolving Kernel Panics, there may be something of help there.

  • ac23 Level 1 Level 1 (0 points)
    Since the disk repair that supposedly failed to complete, the computer has been performing much more consistent, now only having the slight crash here and there. I did perform another check in disk utility and both the verify and repair of the hardrive stated they were working fine, maybe problem gone for a little bit?
    I will do the steps you just posted and hopefully I'll be running 100% again
    If this is this case, I can't say how grateful I am for the help! if this question is marked as solved will this close this thread? I think it may be more helpful to leave it open? The advice helped me, I'm sure someone else is looking for info on the same topic somewhere, so leaving it open would make sense?
  • MGW Level 7 Level 7 (27,020 points)
    No, it won'y close the thread, it will be archived in several months, but you can always post to it, even if others can't.