Windows 10: Windows 10 only using half the installed RAM

Discus and support Windows 10 only using half the installed RAM in Windows 10 Support to solve the problem; Device nameDESKTOP-AJD2UQS ProcessorAMD Ryzen 7 1800X Eight-Core Processor 4.10 GHz Installed RAM64.0 GB (31.9 GB usable) Device ID Product ID System... Discussion in 'Windows 10 Support' started by digdug, Mar 16, 2021.

  1. digdug Win User

    Windows 10 only using half the installed RAM


    Device nameDESKTOP-AJD2UQS
    ProcessorAMD Ryzen 7 1800X Eight-Core Processor 4.10 GHz
    Installed RAM64.0 GB (31.9 GB usable)
    Device ID
    Product ID
    System type64-bit operating system, x64-based processor

    EditionWindows 10 Pro
    Version20H2
    Installed on‎2021-‎03-‎15
    OS build19042.631
    ExperienceWindows Feature Experience Pack 120.2212.31.0


    My problem is in bold. Windows and the programs in windows can't use all RAM.
    I had an older installation of windows 10, version 1909 and it has the same issues as this new install from MS download to a formatted USB drive build version 20H2 on a new SSD.
    BIOS shows all 4 sticks of RAM and currently set to XMP profile 1. I've used different BIOS versions and RAM configuration settings with no change, except faster or slower performance.
    I've used memtest86 full test (which took ~14 hours to complete!) and zero errors on all 4 sticks of RAM.
    CPU-Z detects all RAM with the only difference being two were mfg. 1 week earlier than the other two.
    I found some other answers on this and other forums and tried their suggestions to no avail, which include:
    The MSConfig -> Boot -> Advanced -> Maximum Memory check box
    I've also put all 4 sticks into a gigabyte B550 Aorus Pro with an AMD 3700x with the same result, so it's not the processor, board, or BIOS.
    The current system is:
    Gigabyte AX-370-Gaming K7 BIOS F4
    AMD Ryzen 1800X

    Windows 10 only using half the installed RAM [​IMG]

    Windows 10 only using half the installed RAM [​IMG]

    Windows 10 only using half the installed RAM [​IMG]

    Windows 10 only using half the installed RAM [​IMG]

    Windows 10 only using half the installed RAM [​IMG]


    - - - Updated - - -

    Another post in this forum asked for someone with a similar problem to show a CMD WMIC query.
    Windows 10 only using half the installed RAM [​IMG]

    Windows 10 only using half the installed RAM [​IMG]

    Windows 10 only using half the installed RAM [​IMG]

    :)
     
    digdug, Mar 16, 2021
    #1

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    exodusprime1337, Mar 16, 2021
    #2
  3. Delta6326 Win User
    Delta6326, Mar 16, 2021
    #3
  4. CK011885 Win User

    Windows 10 only using half the installed RAM

    Installing Windows 10 on New PC?

    I'm going to be building a new PC on Christmas and want to install Windows 10 on it. I have Windows 10 on my current PC, which I installed upgrading from 8.1 with the files on a USB. How do I go about installing a clean copy of Windows 10 on this new PC? I think I recall something about installing it once makes Microsoft recognize your hardware, but since this will be a PC I'm not sure what steps I need to take. Do I need to go 8.1 -> 10 or is there a method of going directly to 10?
     
    CK011885, Mar 16, 2021
    #4
Thema:

Windows 10 only using half the installed RAM

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