Imac i7 dead after installing 4GB of Kingston Valueram

Discussion in 'iMac' started by vince82it, Dec 25, 2009.

  1. vince82it macrumors newbie

    Oct 29, 2009
    Hi everybody.

    Yesterday morning I finally received my iMac i7. Everything ok, it looked fine and perfect.

    After 10 minutes of good working, I've tried to install 2 Kingston Valueram modules I purchased before, the KVR1066D3S7/2G.
    After having followed instructions and put everything in the right place, I tried to power up the iMac, but it didn't wake up!!! :(
    The computer seemed to receive power (hd spinning as well as fans and dvd) but nothing appeared on the screen and no chime sound.

    Already requested my replacement iMac. What I'd like to understand: was my iMac defected? Is it possible that a ram module can burn a computer?
    Anyway, I'm intended to try to install my ram on the replacement iMac...
  2. spinnerlys Guest


    Sep 7, 2008
    forlod bygningen
    So the iMac still doesn't work after you removed the Kingston RAM again?
  3. vince82it thread starter macrumors newbie

    Oct 29, 2009
    Yep, it still doens't work after I removed the Kingstone ram... :mad:
  4. MacHamster68 macrumors 68040


    Sep 17, 2009
    so you killed it ..... that wasn`t a nice thing to do
    but maybe only a coincident and it would have died anyway soon
  5. vince82it thread starter macrumors newbie

    Oct 29, 2009
    Why do you say so? It's not possible to kill a computer for having installed two ram modules!
  6. Azrel macrumors regular


    Jun 8, 2005
    that's not true, if you had electrostatic charge on you whilst installing the modules it's possible you've damaged the motherboard.

    this looks highly suspicious you have infact damaged the iMac. I doubt Apple will pick it up though.
  7. Azurael macrumors regular

    Mar 21, 2005
    i7 iMacs come with 4GB... Don't they?

    Edit: I didn't realise they had 4 slots.
  8. TX328F macrumors newbie

    Dec 23, 2009
    Does resetting the PRAM help?

    You might have damaged the RAM modules if you did not handle them correctly (electrostatic discharge), but it is highly unlikely you damaged the computer - unless you really forced the RAM modules while trying to insert them with the wrong orientation :eek:.

    Before returning the iMac, have you tried resetting the PRAM? It might be as simple as that.

    Good luck!
  9. vince82it thread starter macrumors newbie

    Oct 29, 2009
    If it is how you say, I really hope you're also right when you say that you doubt that Apple will pick it up...

    Anyway, Kingston Valueram cannot be not the guilty guy, right?

    I did insert modules the right way, not forcing them. I've tried resetting the PRAM and SMC, no way...
    So, the only thing could be what azrel suggested, i.e. I had electrostatic charge on me. :-(
  10. MacHamster68 macrumors 68040


    Sep 17, 2009
    so you killed it , it was working before you attempted to upgrade the ram with value ram ,some computers are more sensitive to electrostatic discharge , others less
    so best bet not to tell apple about it otherwise you could lose your warranty
    which would then be a expensive saving on a ram module,
    if apple had fitted it even with same result they would replace the mac without question , but just dont tell them you did destroy it by fiddling some cheap ram modules inside
    hope you did wipe of your fingerprints inside
    happend to me too once and i did even care about static discharge , luck was it was a £ 30 pc i was upgrading

    but funny enough , it worked again with the old ram sticks after not fitting all the ram inside , it worked with one stick and with the other , but not any more with both together . both same manufacturer, pny and they came in a double pack so exact the same ram sticks (twins)
  11. Yakuza macrumors 6502a


    Jul 24, 2007
    Lisbon, Portugal
    i remember when upgrading my mbp memory i put on a pair of surgical gloves even after touching a metal thing to discharge the electrostatic.
  12. chrono1081 macrumors 604


    Jan 26, 2008
    Isla Nublar
    Having installed RAM hundreds of times I can tell you its highly unlikely, but still possible to kill a computer while replacing RAM.

    I've only seen it twice.
  13. lamina macrumors 68000


    Mar 9, 2006
    OP, it very likely wasn't you that did it. Put the old RAM back in and tell Apple that it died after ~10 minutes of use. No need to mention the RAM part.

    It may be dishonest, but if they can get away with selling a computer that is zapped that easily, that's ridiculous. I've installed RAM in dozens of computers. It's very likely that OP touched the metal body of the iMac while unscrewing the RAM door. It must have been an issue that was there beforehand.
  14. jedivulcan macrumors 6502

    May 15, 2007
    Personally, I'm under the general belief that computers today are made of sturdier stuff all around (I mean, magnets were generally the death of diskettes and other computer equipment, yet Apple builds them into the power ports and lid for snag-less closing in modern portable Macs).

    Likely that the RAM connectors and the Logic Board in general were twitchy way before you touched the RAM. Even if you by freak chance, hit the RAM with a dash of static... the Mac overall would just not work with that RAM.

    All in all, Apple should take care of you. I'd run a hardware diagnostic (from the iMac restore discs) for the heck of it.
  15. Pressure macrumors 68040


    May 30, 2006
  16. bossxii macrumors 68000

    Nov 9, 2008
    Kansas City
    This is my thinking?

    *** After posting here I thought why not look... I think this maybe your issue... the site doesn't even show "Apple" as an option when searching for ram. Did you search by motherboard vendor? (I didn't look to see what mobo is in the iMac to check that part.) Very possible the logic board was fried, (mmm fried Apples... now I'm hungry!!), they will test the machine when it comes back and pretty good chance they can tell where the issue came from. If the memory socket circuits are fried they are not stupid enough to think this "just happened" they run these machines prior to shipping them and from the tests that were run on my MBP with a graphics card issue in 07. They can tell what parts are the problem. Good Luck, but looks to me like it's probably a fried board from using non compatible ram.
  17. MacHamster68 macrumors 68040


    Sep 17, 2009
    i dont think it died because of wrong ram
    when i put wrong sort of ram (i think it was wrong cl) into my iMac g3 the only thing happened was a biep and flashing power button , so realised my mistake and fitted the right sort and good , no fried board as i think computers have some sort of protection to avoid frying especially as Mac `s are fussy about the right sort of ram anyway more then normal pc`s
  18. sth macrumors 6502a

    Aug 9, 2006
    The old world
    Welcome to the Intel world. Apples don't need special "Mac RAM" anymore, just make sure that the RAM is standards-compliant (e.g. no non-standard voltages).
  19. flopticalcube macrumors G4


    Sep 7, 2006
    In the velcro closure of America's Hat
    Not quite true. Some Mac logic boards can still be finicky about the RAM used, just as some PCs are. Not as bad as it was but not totally free all the time, yet.
  20. Eidorian macrumors Penryn


    Mar 23, 2005
    nVidia's chipsets are very picky compared to the Intel ones for Core 2.

    Lynnfield's onboard controller is extremely picky with RAM and in the majority of cases you need to follow QVL RAM rules. I've seen plenty of Lynnfield + P55 builds get written off as DOA when it's the RAM that's the problem.
  21. archurban macrumors 6502a


    Aug 4, 2004
    San Francisco, CA
    so mac is a piece of ****. it shouldn't be so sensitive. that's why mac has highly broken rate. how that possible? that's really unlikely. that never happened no matter what I used (even mac). that's why many people go to apple store to fix their macs. my PC laptops (sony vaio) never broke. I think that mac is not tough enough to survive in real world.
  22. flopticalcube macrumors G4


    Sep 7, 2006
    In the velcro closure of America's Hat
    And yet they do. What you think and your personal anecdotes are not "the real world".
  23. AlaskaMoose macrumors 65816

    Apr 26, 2008
    I would not have told the whole wold that I killed my iMac by installing defective or improper RAM modules myself. By now Apple may know that it's your fault :)
  24. AlaskaMoose macrumors 65816

    Apr 26, 2008
    I had used a Mac 7300 for around 14 years before I bought an iMac G5 1.8GHz. I am still using that little iMac just fine, and now bought another one.

    There are a whole bunch of reasons why one should be careful when replacing RAM modules, and I will point at a few:

    1. Static electricity builds on your body, and has no place to discharge unless you can provide a path for it to flow. Electronic technicians know this fact, and often wear a grounded band around their wrists to avoid discharging the static electricity directly into the computer's grounding path.

    2. The wrong RAM modules can in fact damage the electronic circuits. It can create overloads, shorts, opens, and so forth.
  25. vince82it thread starter macrumors newbie

    Oct 29, 2009
    Don't say so, please. I'm really scared about this now. Return procedures are stuck until Monday... I just hope to have my 2000 euros iMac working on my desk! :'(
    anyway, I've added ram modules many times in my life, never had a problem like this. I got Kingston value in my MacBook. I keep thinking my iMac was defective.

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