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Thread: Computer doesn't recognize the new RAM i installed




  1. #1
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    Default Computer doesn't recognize the new RAM i installed

    Hello to all.
    I'm new here, and english is not my first language so please bear with me :)

    So i have an old pc which has only 512mb or ram and i wanted to upgrade his Ram memory to 1024 (by adding another stick of 512mb)
    Here's the specifications of my motherboard:

    Gigabyte GA-K8NS
    Bus Type AMD Hammer
    Real Clock 200 MHz
    Effective Clock 200 MHz

    Memory Bus Properties
    Bus Type DDR SDRAM
    Bus Width 64-bit
    Real Clock 200 MHz (DDR)
    Effective Clock 400 MHz
    Bandwidth 3200 MB/s

    Motherboard Physical Info
    CPU Sockets/Slots 1 Socket 754
    Expansion Slots 5 PCI, 1 AGP
    RAM Slots 3 DDR DIMM

    the old stick is:
    Memory DRAM
    Description: ADBGB1916, 512, 64MX64, 4B/SSTL2, 8K/64ms, 184, (32MX8)*16
    Company: A-Data Technology

    and the new one i have bought is:
    Kingston KVR400X64C3A/512 DDR, 512MB, 400MHz PC 3200 64bit

    now after installing the two, the pc only recognizes one of them or non of them, when i checked them separately every one worked fine, but when together only one of them works but either way the pc wont start up and will stay stuck at the first black screen at the start when it counts the cpu memory drives etc..

    please help me to solve this problem, any suggestions will be great.
    Thanks in advance.

  2. #2
    Reggie is offline Junior Member
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    Default Re: Computer doesn't recognize the new RAM i installed

    Kingston KVR400X64C3A has Voltage 2.6V. The default setting in BIOS is 2.5V. Increase by .1V in BIOS

    DDR voltage control
    Normal Supply DDR voltage as DDR required. (Default value)
    +0.1V Increase DDR voltage +0.1V.

    There is no guarantee that mixing different memory modules will work together.

  3. #3
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    Default Re: Computer doesn't recognize the new RAM i installed

    Hello Reggie, thanks for your reply.

    The pc now works with the newer memory stick, the Kingston KVR400X64C3A, the pc functions and boots normally with it, it's only a problem when i put the two together the Kingston and the A-data memory sticks..

    maybe i should change the voltage for the older one ? the A-data memory stick ?

    p.s
    when i put the two together i can't even go to the BIOS menu the boot screen freezes right after it "lists" the cpu name and starts the count of the Ram memory (the running numbers -512mb)

    any suggestions ?

  4. #4
    Acebmxer's Avatar
    Acebmxer is offline Gigabyte Elite
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    Default Re: Computer doesn't recognize the new RAM i installed

    You can try booting with just one stick installed adjust the voltage necessary then try installing the other stick. unless your bios allows you to set voltage per memory slot you set one voltage. That voltage will be set to any slot with a memory module in stalled.

    Like said above there is no guarantee that mixing different memory modules will work together.

    Try returning the one you bought and get a match set of memory modules and make sure they are one supported by your board/bios. Make sure you using the latest bios version.
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  5. #5
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    Default Re: Computer doesn't recognize the new RAM i installed

    Thanks for your reply, Acebmxer.

    I will try the voltage method as suggested, can you please guide me on how to do this ?
    -how to change the parameters and the voltage

    if i change it (say to 2.6v) can it be reversed after that is some problem occurs ?

  6. #6
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Computer doesn't recognize the new RAM i installed

    This may be due to density. You can't mix high density and low density memory without issues, often you have issues mixing any memory but this for sure will always cause issues. Although I am not sure which your old kit is, because you have two densities listed (64Mx64 and 32Mx8)

    How many chips on each side of the old stick? The new Kingston one is High Density 64Mx64 from what I see in the Spec PDF, which should be 8 IC chips on each side of the memory.

    Some boards do not even support high density memory, which yours does because it works with one stick by itself. The correct amount is shown when using the new stick by itself correct?

    You will either need to buy another matching new stick, or find a matching one for your old stick, if they indeed are different densities.

  7. #7
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    Default Re: Computer doesn't recognize the new RAM i installed

    Hello Lsdmeasap.

    I checked the sticks and you are right the new one have chips on one side only and the old one (A-data) have chips on two sides !

    so i guess this is the problem ?
    the only solution is to buy the same Kingston memory chip then ?

  8. #8
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Computer doesn't recognize the new RAM i installed

    Does the new memory show the correct amount of ram when you install it only? You need to check that to be sure it's fully supported, then yes if it is you would need a second stick of that same model.

  9. #9
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    Default Re: Computer doesn't recognize the new RAM i installed

    Yes, the new memory show the correct amount of ram - 512MB DDR
    I checked with CPUID also, same there..

    So i guess i'll need to buy another mach memory stick then ? (same Kingston stick)

  10. #10
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Computer doesn't recognize the new RAM i installed

    Yeap, sounds like that would be the best thing to do if you plan to continue using this old PC :)

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