Windows 7 - 8GB ram only 3.99GB usable


  1. 614spidermonkey
    Posts : 1
    Windows 7 Professional 64bit
       New #1

    Windows 7 - 8GB ram only 3.99GB usable


    Windows 7 Professional 64 bit - Has 8gb of ram (4x2gb), but system is only showing 3.99 usable. (Asus p7p55d board, Intel Core i7 860 - 2.80ghz)

    Slot 4 has a different 2gb card in it than the others (though still corsair)

    I've attached some CPUz SPD snips

    Thanks!

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      My Computer
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  3. LewisHolcombe
    Posts : 62
    Windows 7 Ultimate 32 bit OEM
       New #2

    I had this problem. Is it an old computer? Please share all your specs?
      My Computer
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  4. Mandydeth
    Posts : 17
    Windows 8 64bit
       New #3

    Have you reseated all the ram or used memtest?
    You're 100% sure you're in 64-bit and not 32-bit?
    Does BIOS show all 4 sticks?
      My Computer
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  6. GeneO
    Posts : 1,653
    Windows 10 Pro. EFI boot partition, full EFI boot
       New #4

    Well they seem to be all recognized by the BIOS as they are all seen in the memory tab.
    Make sure memory remapping is enabled in the BIOS. It should have been by default tho.
      My Computer
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  7. sygnus21
    Posts : 7,683
    Windows 10 Pro
       New #5

    Make sure the Maximum memory box isn't checked...

    In the search box tyep "msconfig" (without quotes) click "msconfig.exe", click "Advanced Boot Options" and make sure the "Maximum Memory" box isn't checked. If so, un-check it. You'll probably have to re-boot after that. Then see what it says for memory.



    That box actually limits the amount of memory the system uses, especially on a 64-bit OS.
      My Computer
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