10 Replies Latest reply: Sep 18, 2011 10:47 AM by mcforman
jacob byard Level 1 Level 1 (0 points)
I've got a 24" imac with the 2.4 GHz Intel core 2 duo and 4 GBs of ram. In January I did a software update and the imac hasn't run the same since. At first I had problems booting up. I would get a file folder with a question mark in the middle. I thought the hard drive had gone bad so I replaced it with a new ssd. I did a new install with snow leopard and have only installed one other program- google chrome. Everything else on the machine is stock leopard software. I have everything backed up with time machine on an external drive. I assumed all of my problems would go away with the new drive/ reinstall but they haven't. I can boot up now like normal but now the imac runs very slow. If I run one application everything is mostly fine but when I try to run something else the spinning beach ball pops up. This will last anywhere from 10-60 seconds. Example- I run google chrome with one tab open and I try and run itunes the computer will freeze up for a few seconds. Then I will try and kill itunes and it will freeze up again. When I am finally able to exit itunes chrome will run normal.

Any help/ thoughts would be very much appreciated.

Thanks,

Jacob

24" imac, Mac OS X (10.6.6)
  • 1. Re: imac is running very slow
    rdvholtwood Level 1 Level 1 (135 points)
    Hi Jacob - Welcome to Apple Discussions..

    Here is something I found recently and I've been going through it to see if it helps:

    http://prowiki.isc.upenn.edu/wiki/Troubleshootinga_SlowMac

    Rick
  • 2. Re: imac is running very slow
    DJPhilAngelo Level 1 Level 1 (0 points)
    Hey Guys,

    I just purchased a brand new imac 27in i7 2.93 ghz and updated it to 16gig of ram.
    It seems to be running slow for such a powerful machine. It took me 2 hours and 15 minutes just to install Logic Studio into my computer. This is my 5th Mac computer and never had any problems like this before.
    It seems like installs and updating software take forever to download and load.
    My internet connection seems to be just fine on my macbook pro so don't think it has to do with my internet connection.

    I've been searching on the internet and it seems that alot of people are having problems with no fixes!

    Anyone out there know what is going on?

    Is it an apple update problem with the new 10.6.6 or something wrong with the computer itself?
  • 3. Re: imac is running very slow
    rkaufmann87 Level 8 Level 8 (42,145 points)
    Phil,

    What brand of RAM did you use? There have been reports of 27" iMacs with 16GB having problems. It seems the only brand of RAM that works is either the RAM Apple supplies or Samsung RAM. If you are using any third party RAM you may either want to swap it out for one of the above OR downgrade to 12GB.
  • 4. Re: imac is running very slow
    DJPhilAngelo Level 1 Level 1 (0 points)
    rkaufmann87,

    Thanks for responding

    I purchased the computer a few days ago. The day i brought it home I updated the Computer and Installed Logic Studio all with the original 4Gb of Ram the computer came with. all The updates took forever and logic took over 2 hours to install. Never seen a computer take so long to install a program or updating software.
    I installed my new ram just yesterday to 16 Gb. I do use a third party Ram from OWC but never had any problems with there ram before.
  • 5. Re: imac is running very slow
    DJPhilAngelo Level 1 Level 1 (0 points)
    Is there anyway to test the speed of the ram you have to see if its working?
  • 6. Re: imac is running very slow
    rkaufmann87 Level 8 Level 8 (42,145 points)
    Usually OWC's RAM is just fine however they will probably acknowledge the issue and if pressed will upgrade you to Samsung RAM. However first let's try 2 things. If they don't resolve your problem remove one of the DIMMs so you have 12GB installed:

    1. Do a SMC reset (instructions below)

    2. In Disk Utility Repair Disk Permissions

    _SMC RESET_

    • Shut down the computer.
    • Unplug the computer's power cord and all peripherals.
    • Press and hold the power button for 5 seconds.
    • Release the power button.
    • Attach the computers power cable.
    • Press the power button to turn on the computer.

    _PRAM RESET_

    • Shut down the computer.
    • Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
    • Turn on the computer.
    • Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
    • Hold the keys down until the computer restarts and you hear the startup sound for the second time.
    Release the keys.

    Test to see if the problem has been resolved.
  • 7. Re: imac is running very slow
    rkaufmann87 Level 8 Level 8 (42,145 points)
    Is there anyway to test the speed of the ram you have to see if its working?


    Memtest, you can find it by Googling it.
  • 8. Re: imac is running very slow
    DJPhilAngelo Level 1 Level 1 (0 points)
    I did everything you said.

    I ran a disk Utility permissions check and there were a lot of differences in there but nothing that seemed bad everything was repaired except for the Javavirtualmachine that i know isn't a problem and wont be repaired cus there is nothing wrong.

    But for now things seem to be working faster So maybe that permissions check did something but we will see.

    Thanks for the Help!! Im going to try to install some other stuff and see what happens.
  • 9. Re: imac is running very slow
    rkaufmann87 Level 8 Level 8 (42,145 points)
    Let's keep our fingers crossed. If that proves to not be it then remove 1 DIMM so you're at 12GB and then test again.
  • 10. Re: imac is running very slow
    mcforman Level 1 Level 1 (0 points)

    RKauf -

    I'm kind of in the same boat.  Have a 27" 2.93, i7 with 8gb and 2TB.  All apple.  DId all you suggested above to DJ.and seemed to help initially (PRAM, SMC reset, Fix permissions), then went back to issues after a while, (including spinnnig rainbow gear when I open windows, etc.)  I do NOT have any process' that I know about running in the background.  No anti-virus, etc.  Not sure what else I can/should do?  Any ideas would be GREATLY appreciated.