Windows 10: Windows 10 20H2 build 19042.964 only sees 24GB of 32GB installed RAM

Discus and support Windows 10 20H2 build 19042.964 only sees 24GB of 32GB installed RAM in Windows 10 Drivers and Hardware to solve the problem; Hi, I am using an Asus X299 TUF Mark 1 MOBO with the latest BIOS and memory modules from the QVL list. All four sticks are OK when installed... Discussion in 'Windows 10 Drivers and Hardware' started by tbingel, May 4, 2021 at 12:42 PM.

  1. tbingel Win User

    Windows 10 20H2 build 19042.964 only sees 24GB of 32GB installed RAM


    Hi, I am using an Asus X299 TUF Mark 1 MOBO with the latest BIOS and memory modules from the QVL list. All four sticks are OK when installed individually. CPU-Z sees all four but OS reports only 3 slots are occupied. BIOS also recognizes all four modules. Any ideas?

    :)
     
  2. Megahertz Win User

    Windows 10 20H2 build 19042.964 only sees 24GB of 32GB installed RAM

    Welcome to the Forum.

    Please edit your profile with ALL your hardware specs. It will help us to help you
    System Specs - Fill in at Ten Forums

    Are all memory same brand and model?
    Download, extract and run HWInfo
    Close the summary. Select memory. Take a screen shot and post here as an image.

    Windows 10 20H2 build 19042.964 only sees 24GB of 32GB installed RAM [​IMG]
     
  3. bobkn Win User
    Windows 10 20H2 build 19042.964 only sees 24GB of 32GB installed RAM

    Stupid question: do you have the DIMMs installed per the manual?


    Windows 10 20H2 build 19042.964 only sees 24GB of 32GB installed RAM [​IMG]


    Which CPU are you using? 4 core supports dual channel RAM, 6 core and up quad channel.

    You could try booting the PC with a single DIMM. Try the DIMM in each of the four slots you've used. (I know that there will be a specific slot recommended for a single DIMM, but I hope that the PC will boot with a stick in an arbitrary slot.)

    I had something similar with an AMD based system. Turned out to be a defective CPU socket. I suppose that something similar could happen with an Intel LGA system. The similarity is that I believe the memory controller on current AMD and Intel models resides on the CPU, not the motherboard chipset.

    Best of luck.
     
  4. ago123 Win User

    Windows 10 20H2 build 19042.964 only sees 24GB of 32GB installed RAM

    i inserted new RAM [32GB] but rather 32GB shows usable 24GB is RAM mal

    i inserted new RAM [32GB DDR2 used chips ECC] but rather 32GB shows usable 24GB is RAM malfunction????? on boot i get error slot 2...well?



    Windows 10 20H2 build 19042.964 only sees 24GB of 32GB installed RAM [​IMG]



    Windows 10 20H2 build 19042.964 only sees 24GB of 32GB installed RAM [​IMG]



    Windows 10 20H2 build 19042.964 only sees 24GB of 32GB installed RAM [​IMG]
     
Thema:

Windows 10 20H2 build 19042.964 only sees 24GB of 32GB installed RAM

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