Can see 8gb in BIOS, but only 4 useable

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  1. Posts : 13
    Windows 7 Ultimate 64 bit
       #1

    Can see 8gb in BIOS, but only 4 useable


    Hi there, I've done some reading and apparently I need to enable 'memory remap feature' in BIOS, but I cannot see it anywhere in the BIOS.

    Please see photos/screeny attached and see if it makes any sense..

    mobo: GA-P55A-UD3

    8 X 2GB RAM
    Attached Thumbnails Attached Thumbnails Can see 8gb in BIOS, but only 4 useable-device.jpg   Can see 8gb in BIOS, but only 4 useable-img_0540.jpg   Can see 8gb in BIOS, but only 4 useable-img_0541.jpg  
      My Computer


  2. Posts : 1,686
    Windows 7 x64 Ultimate and numerous virtual machines
       #2

    Hi Nolube and welcome to Seven forums. From what I can see from the screen shots of your bios you have 8 GB ram installed. The system is disabling 4g of it as the first screen shot states 4096 Mb as the total ram. 2 of your slots are not enabled. Try removing and reseating the ram (with the power off). Check in the BIOS if there is a setting to enable or disable the second ram channel.
      My Computer


  3. Posts : 6,458
    x64 (6.3.9600) Win8.1 Pro & soon dual boot x64 (6.1.7601) Win7_SP1 HomePrem
       #3

    After following Indiantone's instructions, you might try resetting BIOS

    F6: Fail-safe defaults
    or
    F7: optimized defaults
      My Computer


  4. Posts : 24,479
    Windows 7 Ultimate X64 SP1
       #4

    In the Start Search type msconfig to open the System Configuration window, if UAC asks, allow it to run. Select the Boot tab and click the Advanced button. The BOOT Advanced Options window will open.
    Uncheck the box for Maximum Memory if it is checked. Click OK, Apply and reboot for the change to take affect.


    Also run the WEI, Windows Experience Index.
      My Computer


  5. Posts : 13
    Windows 7 Ultimate 64 bit
    Thread Starter
       #5

    Hey there, thanks for your replies.

    Have tried re-seating the RAM, also looked everywhere in the BIOS for such a thing. Couldn't find it, but I suspect it's in there somewhere?? I installed my flatmate's RAM (4 x 4gb sticks) and had the same issue 16gb RAM, with only 8gb useable..

    Have tried updating the BIOS but the update files appear to be for 32-bit from here .. GIGABYTE - Motherboard - Socket 1156 - GA-P55A-UD3 (rev. 2.0)

    Haven't tried resetting the BIOS though...

    Also, ran the WEI.. see attached.

    Cheers
    Attached Thumbnails Attached Thumbnails Can see 8gb in BIOS, but only 4 useable-experience.jpg  
      My Computer


  6. Posts : 24,479
    Windows 7 Ultimate X64 SP1
       #6

    You may find the setting under MIT, Advanced Memory Settings.
    You may have a bad board too, run this exactly as told, i.e., RMA in different slots.

    RAM (memory) test:
    This will require memtest on a bootable CD or USB stick.
    RAM - Test with Memtest86+
      My Computer


  7. Posts : 6,458
    x64 (6.3.9600) Win8.1 Pro & soon dual boot x64 (6.1.7601) Win7_SP1 HomePrem
       #7

    nolube said:
    .....
    Have tried updating the BIOS but the update files appear to be for 32-bit from here .. GIGABYTE - Motherboard - Socket 1156 - GA-P55A-UD3 (rev. 2.0)

    Haven't tried resetting the BIOS though
    .....
    BIOS is not bit wise

    Before updating BIOS try resetting to defaults. You have two slots that are not enabled. I don't see why that would be the default.
      My Computer


  8. Posts : 25,847
    Windows 10 Pro. 64/ version 1709 Windows 7 Pro/64
       #8

    Did you complete Gary's post #4?
      My Computer


  9. Posts : 13
    Windows 7 Ultimate 64 bit
    Thread Starter
       #9

    Yes I tried resetting to default fail safe, also optimised default. Just running the ram checker now.
    Attached Thumbnails Attached Thumbnails Can see 8gb in BIOS, but only 4 useable-image.jpg  
      My Computer


  10. Posts : 24,479
    Windows 7 Ultimate X64 SP1
       #10

    Let it run for the full 8 passes, unless you get any error, red lines at the bottom. If errors then go the single stick in each slot.

    It shouldn't make a different, but Slot 1 RAM has a different part number unless it's a glitch in memtest.

    Can see 8gb in BIOS, but only 4 useable-image.jpg
      My Computer


 
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