HT1423 iMac Memory Updreade

I have an iMac (Mid 2007) and wanted to upgrade from (2) 1GB PC2-5300  667MHz DDR2 SDRAM to (2) 2GB PC2-5300  667MHz DDR2 SDRAM.  I replaced according to instructions but when I powered up the iMac would not boot.  Any suggestion?

What happens when you replace with the old cards again?
Allan

Similar Messages

  • HT1423 iMac memory upgrade!

    I have a 21.5 inch iMac (mid 2011) and according to apples support I can only upgrade to 4x4Gb RAM. I have 2x4 + 2x8 and that works fine?! I need to upgrade to 4x8Gb. What's the deal?

    According to MacTracker, your machine has these specs. Note that Apple says only 16 GB supported, but they claim it'll work w/32 GB, so install them and see what happens.
    Maximum Memory
    32 GB (Actual) 16 GB (Apple)
    Memory Slots
    4 - 204-pin PC3-10600 (1333 MHz) DDR3 SO-DIMM

  • HT1423 iMac Memory does not work?

    iMac (Mid 2007)  Removed the original IGB Ram replaced with 2 new PNY DDR2 PC2-5300 667MHz Memory.  iMac runs but screen is blank and no start up sound of any kind.  Held down the start button, machine stopped.  Removed new ram, installed old 1GB ram and machine works normally.  Tried with only one 2GB Memory and got same result.  What did I do wrong??

    I'm with stedman1
    I've seen where PNY say's there OPTIMA RAM is compatible with everything from 400, 533 and 667 MHz bus speeds or 667 and 800 MHz bus speeds, in both there Spec's and on there packiging.
    Example: > PNY OPTIMA 2GB DDR2 667 MHz PC2-5300 Notebook / Laptop
    say's it's
    Compatible with DDR2 PC2-5300 (667 MHz Bus Speed), DDR2 PC2-4200 (533 MHz Bus Speed), DDR2 PC2-3200 (400 MHz Bus Speed)

  • Has anyone experience iMac memory issues with One Drive (previously Sky Drive) - uses 5GB of my 8GB memory!

    I recently started experiencing memory issues with my iMac due to One Drive using up to 5GB of my iMac memory (total of 8GB). Every time I start up my iMac Activity Monitor shows One Drive uses around 4-5Gb of the internal memory for no reason. Previously Onde Drive seemed to work fine, it's only since about 2 weeks I notice this. It's really annoying as the iMac freezes up regulalrly and I need One Drive to synchronise my files across different devices.
    Has anyone experienced this too and are there any known fixes?

    Yes this is happening to me too, since the last upgrade. Eventually MacOS starts insisting I "Force Quit" all my applications as I have run out of application memory.
    OneDrive doesn't appear in that list because it's not an application... but Activity Monotor clearly shows it's the culprit, taking up 5GB+ of RAM.
    I've raised the issue on Microsoft's forums:
    http://answers.microsoft.com/en-us/onedrive/forum/sdperformance-sdother/onedrive -for-macos-memory-leak/fe04cf60-949f-47b6-b886-10539b5c5cc3?tm=1397636232934

  • HT1423 install memory in new imac

    Just bought a new 27" iMac - New Apple iMac MD096B/A.
    How do I access the memory slots to install extra RAM?
    Thanks!

    Disconnect the power cable there is an eject button

  • HT1423 Upgrade memory in an iMac.

    It's looking pretty straightforward to install more memory in and iMac.   Is it really that easy - for a non-teckie, that is!

    Welcome to the Apple Support Communities
    It depends of the iMac. For example, the Late 2012 iMac is more difficult to install RAM because the slots aren't visible, but on an older iMac, it's so easy. Just follow the steps of that link to install memory, and look the maximum memory supported for your computer

  • HT1423 Adding memory to my iMac

    I want to add memory to my iMac and when using the built in memory selection it displayed  the following...when i searched for the PC3-10600 meeting the criteria listed all that came up was HP products...is this correct?  Will this work?  Just want to double check before I purchase more memory.
    Thank you for any help you can provide.
    iMac (Mid 2011)
    iMac (Mid 2010)
    iMac (Late 2009)
    PC3-10600
    PC3-10600
    PC3-8500
    Unbuffered
    Unbuffered
    Unbuffered
    Nonparity
    Nonparity
    Nonparity
    204-pin
    204-pin
    204-pin
    1333MHz DDR3 SDRAM

    You said the RAM specifications for your Mid 2011 iMac, so now you only have to look for RAM.
    You can buy more RAM at OWC or Crucial

  • HT1423 after memory upgrade iMac crashes

    I upgraded the memory on my iMac 21.5 mid 2010 in accordance with the instructions and now it continues to reboot and after a while the screen turns black and a beeping sounds occurs. Suggestions to resolve this are welcome.

    D._Paul Schuilwerve wrote:
    The specs are correct and have used Corsair Mac memory. Have used this brand also to upgrade another iMac and a Macbook Pro
    So have I, my Early Core Duo has had 2 1GB PC2- 5300 667MHz Corsair modules in it for years and has never had a problem.
    If you are sure that the modules a fully seated in the slots, then the only conclusion is that there is something wrong with that RAM.

  • HT1423 Locating Memory Modules for iMac?

    I have a 21.5” iMac with a 3.06 Ghz Intel Core i3 Processor with four slots for Memory, capable of holding four 4 GB 1333MHz DDR3 SDRAM Modules, but I can’t find these to purchase. Can someone suggest to me where I can purchase these, please? Thank you.

    http://eshop.macsales.com/shop/memory/iMac/2011/DDR3_21.5_27

  • Confusing imac memory install

    I'm confused by the description in the apple support notice(http://support.apple.com/kb/HT1423):
    "i5 and i7 Quad Core iMac computers come with both top memory slots populated. These computers will not start up if only a single DIMM is installed in any bottom slot; these computers should operate normally with a single DIMM installed in any top slot."
    I bought an imac populated with 2- 2gig RAM chips.
    But if I want to add just  ONE 4 gig chip.   The implication is that I cannot put JUST ONE  in one of the open bottom slots. So to make sure that I don't have only one chip in the bottom slot, I would need to move one of the 2 gig chips that were pre installed, into a bottom slot to go along with the 4 gig chip I'm adding.  This would put a "4" and a "2" in the bottom, and one "2" in the top.
    Is this correct??

    Maybe I wasn't clear.  I don't need instruction about how to put memory in.  I've taken two powerbooks, and a mac book pro apart and replace various parts and hard drives as well as putting in memory.  That's not the issue.
    There are four slots for the memory.  My imac has the top two populated with two  2-gig Ram chips.  The bottom slots are empty.
    The apple support bulletin clearly states  that it won't start up if I only put on chip in the two bottom slots.  Of course I could buy another 4 gig chip, but not knowing this upfront I did not do so.  Since I am now working on my old powerbook 800, as my macbook pro developed the black screen of death, I am chomping at the bit to get back into my new imac when it comes.  But clealry from the bulletin, if I just put a 4 gig in the empty slot, it won't start up.  So this means I have to move one of the two gig ram chips to the bottom slot.  Right?

  • HT1423 Mixing Memory Modules

    My iMac 27" can take up to 16g memory having 4 slots.  Right now I have 4G memory installed (2x2g ram). Can I add 2 x 4g memory in the vacant slots? Thanks!

    As long as the memory you get is the correct type it should not be a problem.

  • HT1423 Kingston Memory RAM DDR3 4GB is compatible is the same latency? or dont mater

    is compatible with imac 27 inch mid 2011

    Welcome to Apple Support Communities
    Sometimes Kingston RAM gives problems with iMacs, so I don't recommend you to buy this brand memory. Instead, you can buy OWC, Crucial or Samsung RAM, completely compatible with your iMac > http://eshop.macsales.com/shop/memory/iMac/2011/DDR3_21.5_27
    Your iMac requires DDR3 1333 MHz memory, so have a look at memory with those specs. Other memory won't work with it

  • HT1423 the memory-access door won't come off, HELP!

    Hi,
    I have a mid-2007 iMac with 1 GB of ram and i'm trying to replace it, but the memory-access door won't come off. i loosen the screw with a screw driver but it won't open and i don't know why. i want to upgrade to 4 GB.
    is there some trick to opening it thats not stated in this article? please help me, i don't know what to do :-( i really need to get lion on this thing and can't do that without a RAM update.

    Some times there's a bit of prying in order with a thin blade.
    http://eshop.macsales.com/installvideos/imac_mid_2007_mem/

  • HT1423 Adding memory

    Running out of memory on my IMac 8,1 (~2008) so what is the best way to add more memory to my 320 GB capacity?

    You are mixing Hard Drive Space with RAM (random access memory). If you need a bigger Hard Drive my suggestion would be to get a Firewire 800 cradle with a removable bare drive so you could swap out drives for your own convenience. OWC or Crucial have External Drives at reasonable prices and you should have a backup strategy that includes at least one bootable clone of your existing system drive. When you get your drive you can move your pictures, songs, movies and other large files off your internal harddrive and that way your system would be happier with more space to work in. If you want more RAM then both of the vendors I suggested have guaranteed compatible RAM and your system can be upgraded to 6GB which will improve performance and allow more Apps to be open simultaneously.

  • IMac Memory slots

    I keep getting confused on how many slot there are total, so my question is, how many total memory slots are in the new intel iMac 24"?

    flexibility of easily adding more memory in the
    future, keep two (sic) memory slots open by selecting
    the 1 SO-DIMM (rather than 2x512 SO-DIMMs) option.
    Interesting to note, that this statement is only on the 24" model. It is absent from the 17" and 20" which only states:
    How much memory is right for you?
    Choose the standard 1GB of memory if you'll be photo editing, gaming, creating illustrations or building complex presentations.
    The 2GB option is ideal if you plan to use your system regularly for sound design, video editing, DVD authoring, animation and intensive gaming.
    Max out your memory with the 3GB option to enjoy the highest performance for everything you do.

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