Windows won't recognize half my RAM

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  1. essenbe's Avatar
    Posts : 12,246
    Windows 10 Pro 1903
       #21

    CPUZ says he is using F4. But I think the newer bios updates were for the Kaveri CPUs that came out after his CPU.
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  2. essenbe's Avatar
    Posts : 12,246
    Windows 10 Pro 1903
       #22

    @Cliff S, I don't know if that would make a difference or not.
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  3. essenbe's Avatar
    Posts : 12,246
    Windows 10 Pro 1903
       #23

    @Silariuss try taking the old sticks out and just using the new sticks and see what it looks like. Always turn the power off and drain the system first.
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  4. Polo6RGTI's Avatar
    Posts : 793
    Windows 10 x64 18363.836
       #24

    @Silariuss you can use these commands also to see if Windows recognises all the DIMM's:

    Code:
    wmic computersystem get totalphysicalmemory
    Code:
    wmic memphysical get MaxCapacity, MemoryDevices
    Code:
    wmic MemoryChip get BankLabel, Capacity, datawidth, devicelocator, MemoryType, manufacturer, configuredclockspeed, configuredvoltage, partnumber, Speed, Tag, status

    Windows won't recognize half my RAM-screenshot-28-.png
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  5. Berton's Avatar
    Posts : 8,110
    Win10 Home and Pro, Win10 Insider Preview, WinXP Home Premium, Linux Mint, Win7 Pro
       #25

    Silariuss said:
    Attachment 193986

    I noticed that as well, Dram voltage = 1.5v confirmed.
    This screen shot is interesting, shows only 2 of the memory slots being used [lower right]. That's the same as mine but I am only using 2 modules. My next choice is such a situation is to boot to a LiveDVD Linux and see if the same situation exists completely outside of Windows. If it does have the same problem and the modules have been swapped around then the motherboard would be the suspect.
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  6. Posts : 16
    Windows 10
    Thread Starter
       #26

    Polo6RGTI said:
    @Silariuss you can use these commands also to see if Windows recognises all the DIMM's:
    Windows won't recognize half my RAM-cmdprpt.png
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  7. Posts : 16
    Windows 10
    Thread Starter
       #27

    essenbe said:
    @Silariuss try taking the old sticks out and just using the new sticks and see what it looks like. Always turn the power off and drain the system first.
    cpuz still showing single channel with only new sticks in 3+4, Windows recognizes only 8gb now .

    Windows won't recognize half my RAM-task2.png
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  8. Posts : 16
    Windows 10
    Thread Starter
       #28

    Pretty sure can just solve this to my motherboard is broken. I get no boot when I have a single ram stick in slots 1 or 3, think those slots are just broken. Am I wrong?
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  9. Berton's Avatar
    Posts : 8,110
    Win10 Home and Pro, Win10 Insider Preview, WinXP Home Premium, Linux Mint, Win7 Pro
       #29

    I have a similar Gigabyte Ultra Durable 3 motherboard and the memory channels are listed in the manual as Channel 0 being Slots DDR3_1 and DDR3_3 with Channel 1 being Slots DDR3_2 and DDR3_4. It also shows the configuration of Dual-Channel using 2 modules in Slots 1 & 2 or in Slots 3 & 4 or all 4 filled.

    Some motherboards are particular in identification of memory especially if mismatched in even the most minor of details, usually best to get all modules at the same time, assures same part number/catalog number/SKU, make and model.
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  10. bobkn's Avatar
    Posts : 2,975
    Win 10 X64 Pro 2004 19041.208
       #30

    Plankton said:
    Yes....it states in the blue text.....you have to use 2 x 16 gb ram sticks.
    You misinterpret the specs. 16GB DIMMs are the largest supported. 4 X 8 is OK.

    See the RAM support list. https://www.gigabyte.com/Motherboard...30#support-doc It includes a number of 4 X 8 entries.

    If the DIMMs aren't exactly identical, the OP may need to manually set the RAM timings. It may even be necessary to back off a tick on the latency. It may be unwise to trust the SPD settings if the two pairs of DIMMs aren't exactly the same.

    Or just buy RAM that from the memory support list. (That's a bit like saying "Let them eat cake!". Sorry about that.)
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