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Upgraded MacBook Memory - MacBook Won't Start

8481 Views 14 Replies Latest reply: Oct 8, 2009 6:53 AM by diego-charles RSS
Reuben Feffer Level 2 Level 2 (195 points)
Currently Being Moderated
Jul 11, 2009 4:58 AM
I've just upgrade the memory on a Late 2007 white MacBook from the 2x 512MB chips it came with, to 2x 2GB. So from 1GB total to now 4GB total.

The problem is, when I push the power button now, the MacBook won't start up. The CD/DVD drive makes a noise, and the white sleep light on the front comes on solid, but the familiar Mac chime isn't heard and the computer doesn't boot into Leopard.

What have I done wrong?

The memory I put in it is Kingston 2GB 667MHZ DDR2 Non-ECC CL5 SODIMM 200-pin

http://www.amazon.co.uk/Kingston-667MHz-DDR2-Non-ECC-SODIMM/dp/B000JREMTO/ref=pdts_ce52?ie=UTF8&s=electronics

Message was edited by: Reuben Feffer
 iMac 17" 2GHz, 2GB RAM, 250GB Hard Drive (Xbench 134.26), Mac OS X (10.5.7),  16GB iPhone 3GS  40GB Apple TV
  • a brody Level 9 Level 9 (62,010 points)
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    Jul 11, 2009 5:39 AM (in response to Reuben Feffer)
    ValueRAM is Kingston's lower quality RAM. I would not buy it because of issues like this. Secondly, if your MacBook predates November of 2007 in release, it will only be able to read 1 GB over the existing 2 GB by design.

    To figure out if it is pre-November, look at the serial number in our System Profiler of the computer itself, clicking on the word "Hardware."

    A letter or two letters will be followed by the number 7, and then following that are two numbers. That's the week of 2007 your machine was produced. There are 52 weeks, so naturally week 41 or earlier would be the 3 GB limit.

    Crucial is the only UK supplier of RAM I'd buy RAM for my Mac from because their website actually states the Mac model and vintage of Mac model you are buying RAM for. That ensures you get the exact spec. If you can find another lifetime warranty RAM supplier that states that on their website that you can buy from in the UK, I'd check with them as well. See my FAQ*:

    http://www.macmaps.com/badram.html

    - * Links to my pages may give me compensation.
    An Apple user since 1981, Mac OS X (10.5.7)
  • y_p_w Level 4 Level 4 (3,550 points)
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    Jul 11, 2009 5:59 PM (in response to Reuben Feffer)
    Reuben Feffer wrote:
    Thanks for your reply.

    Ok. So Kingston's ValueRAM is bad. It's weird though, because the product I ordered "Kingston 2GB 667MHz DDR2 Non-ECC CL5 SODIMM" sounds like exactly the right kind of memory for a MacBook. It SHOULD work. But it didn't. So I've returned it to Amazon for a refund and will never buy any more of it again.


    We've been over this before. I suspect that Kingston is selling some DDR2 800 (PC2-6400) memory as DDR2 667 (PC-5300). What you report has all the marks of cases where people have used properly labeled PC2-6400 modules. We've heard of some people using the ValueRAM PC2-5300 (DDR2 667) labeled modules in the newer MacBooks, and System Profiler reports DDR2 800. If you combine it with a proper DDR2 667 module, it will work together, but with both operating at 667.
    13" MacBook 2.2 4GB (200GB Travelstar 7K200), 14" iBook G4 1.42 1.5GB, Mac OS X (10.5.7), 12" iBook G3 600 (10.3.9)
  • a brody Level 9 Level 9 (62,010 points)
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    Jul 11, 2009 6:03 PM (in response to Reuben Feffer)
    Yes, you are correct, it should be a 4 GB of RAM machine (post November 1 2007). So it definitely is more likely to be a Kingston ValueRAM problem than too old a Mac question.

    Message was edited by: a brody
    An Apple user since 1981, Mac OS X (10.5.7)
  • thefoote Level 1 Level 1 (0 points)
    Currently Being Moderated
    Jul 16, 2009 3:17 AM (in response to Reuben Feffer)
    I wanted to get some clarification on a similar subject. I too have an early model Black Macbook and was also inclined to update some things on it. I just left OWC's website ordering a new 320 gb HD and their 4gb ram set. After reading this topic I see that my particular laptop's date is "43" W8743.... Is there any reason why the Macbooks before the "48" date don't accept more than 3gb's of Ram? Additionally is there any way to work around this? I'm very much wanting to upgrade of my system (just to stay ahead of or with the tech power curve without dropping the cash on a whole new system), and Ram is a crucial piece here that I'm looking to replace. In addition to any information, can you please link documentation if it's not too much trouble. Thanks for the help all!
    Macbook, Mac OS X (10.5.7), 2.16 Intel Core 2 Duo, 2GB Ram, 200GB HD
  • a brody Level 9 Level 9 (62,010 points)
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    Jul 16, 2009 3:45 AM (in response to thefoote)
    Read my post again, I said week 41 or earlier. If you have week 43, it should see all 4 GB if the RAM is to spec.
    An Apple user since 1981, Mac OS X (10.5.7)
  • thefoote Level 1 Level 1 (0 points)
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    Jul 16, 2009 4:09 AM (in response to a brody)
    Oh man, I apologize, I misread and thought it said week 48. Thanks for the help and I apologize for the redundant question.
    Macbook, Mac OS X (10.5.7), 2.16 Intel Core 2 Duo, 2GB Ram, 200GB HD
  • a brody Level 9 Level 9 (62,010 points)
    Currently Being Moderated
    Jul 16, 2009 4:22 AM (in response to thefoote)
    And my apologies, I was reading the calendar wrong myself! Week 44 is the turnover date!
    So if you have week 43, yes, you will only be able to read 3 GB. I had to make doubly certain.
    The only way to change that is to get week 45 or later.

    Message was edited by: a brody
    An Apple user since 1981, Mac OS X (10.5.7)
  • thefoote Level 1 Level 1 (0 points)
    Currently Being Moderated
    Jul 16, 2009 4:25 AM (in response to a brody)
    Well that ***** as I have just purchased the Ram, is there anyway to work around this and just for my personal interest, do you by any chance have a link of some sort that explains why Apple changed this? What piece of hardware prevents Leopard from recognizing 4gb of ram, etc..?
    Macbook, Mac OS X (10.5.7), 2.16 Intel Core 2 Duo, 2GB Ram, 200GB HD
  • a brody Level 9 Level 9 (62,010 points)
    Currently Being Moderated
    Jul 16, 2009 5:48 AM (in response to thefoote)
    The CPU itself. Apple updated to the new CPUs the very next week. Unfortunately Intel provided Apple with a CPU series that while 64 bit in nature could only address 3 GB of RAM.

    One way to deal with it is to sell the extra RAM, and buy a 1 GB module.
    Another is to return it to the store under their return/exchange policy.
    An Apple user since 1981, Mac OS X (10.5.7)
  • scorpio1980 Level 1 Level 1 (0 points)
    Currently Being Moderated
    Oct 6, 2009 10:18 AM (in response to a brody)
    hi there,
    I have the very same problem with macbook white. But i dont know how to figure out which edition it is as my serial no. is different to that in your example above. I bought mine in 2008. My serial Number begins with the follwing:

    W8810A

    how do i figure out how much RAM I can purchase. Already i've tried two (Kingston)2GB DDR2 200-pin. They both didnt work but one did with my original 512MB. i guess i should just return them and buy the other ones you spoke about??
    Macbook, Mac OS X (10.6.1)
  • diego-charles Level 1 Level 1 (0 points)
    Currently Being Moderated
    Oct 8, 2009 6:53 AM (in response to a brody)
    what about mine ? i have a Macbook white (MB061LL/A - Mid 2007) W8735R...

    so i can't put 2x2gb ?

    i've heard that it would work with 64bit systems ( snow leo / win x64 )

    i'm thinking about getting this kit: OCZ 2x2gb 667mhz 200pin ( OCZ2MV6672G )

    https://www.kabum.com.br/cgi-local/kabum3/produtos/descricao.cgi?id=01:01:12:120 :29
    MacBook White (MB061LL/A), Mac OS X (10.5.8)

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