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  1. #1
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    Question G75VX Half of RAM has disappeared ?

    Hello all.
    I have an G75VX 16 GB RAM version that I am very happy with which I have been using for a long time now (around 5+ years)
    2-3 days ago while I was using a couple developer programs like I always do I got a low memory warning and when I checked around I was surprised to see only 8GB of RAM was shown (%90 were in use). I was surprised and used Windows Memory Check service (which found nothing wrong with memory) and followed some tutorials that aimed at memory leaks (disable NDU at REGEDIT etc). I checked BIOS (by tapping F2 at the opening) and it showed 8192 MB of memory.
    Then I checked resources tab in the Task Manager it showed 14 GB of RAM was available but only 8 were in use. Then sometimes it showed 16 and then 15.8 GB of RAM was available. You can see the screenshot below:




    I am really confused as to what is happening here. This has never happened and I never had any hardware problems with this laptop. Everything else seems to be just fine and as always. Any ideas as to to what this might be ? And what can be done ? I really need that 8 GB of memory.

    Some Info:
    I am using Windows 8.1 64 bit. (6.3 Build 9600)
    BIOS Version: G75VX.204
    I made no formatting or any hardware changes to my machine.

    Thanks a lot beforehand.

  2. #2
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    Uhhm, sorry for double posting but really no one has any ideas ? I am really in a pinch.
    I really love my ASUS ROG laptop and want to keep using it.
    Thanks again.

  3. #3
    ROG Guru: Blue Belt Array Gps3dx PC Specs
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    Laptop (Model)Current: G751JT | Retired: G55VW, G51JX
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    Quote Originally Posted by TexSa View Post
    Uhhm, sorry for double posting but really no one has any ideas ? I am really in a pinch.
    I really love my ASUS ROG laptop and want to keep using it.
    Thanks again.
    it can be caused by number of reasons:

    1. dust- turn PC off -> open the laptop to a point where you can take the RAM sticks out -> clean any dust CAREFULLY W/O HARMING ANY OF THE SMALL ELECTRONICS of the motherboard, then apply isopropanol ( =isopropyl alcohol which is recommended more then regular 'ethyl alcohol' ) to the sockets and stick's gold connectors, making sure not to leave any remnants of cotton fiber in/on them.
    2. one of the RAM sticks / sockets got HW issue... you can verify it AFTER cleaning any dust ( read part A above ) by simply switching the sticks into different sockets, or better - take all the cards out, then insert only 1 card at a time TO THE SAME SOCKET then boot into bios to see if it detects the right RAM amount of the stick.
    3. SW issue - if it's not HW based issue, it mightbe something with windows, although IMHO it's RARE... might be due to an OLD and non-updated OS to the latest revision, or a malware that hampers the CPU & RAM on low level.
      typically, one can verify it's an OS issue by booting ANOTHER PORTABLE OS from a USB, and since the issue is with a MS based OS, I recommend to try to boot a 'portable' ( i.e live boot ) linux based OS like ubuntu (or any other) to check the total ram available to an OS.
      if with the linux everything is OK, i'd recommended a full wipe of the drive the windows sits on with a clean windows installation ( NO restore ).

  4. #4
    ROG Guru: Orange Belt Array
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    I don't have a G75VX but I do have a couple G75VW-3D laptops. Both work much better with Windows 10 than they ever did with Windows 8.1.

    I agree with Gps3dx, check possible hardware issues with your memory and/or memory controller then move on to possible software issues. A clean Windows 10 installation would go a long way to improving this old laptop.

    Good Luck
    G752VSK, G75VW-3D, G51J, G1S
    Homebuilt Windows Server

  5. #5
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    Thank you a lot mates. Both of you.
    It seems a full disassembly is required to get to the installed RAM modules.
    https://www.ifixit.com/Guide/ASUS+RO...lacement/78562
    I am not sure if I can pull it off myself (or "put it together" afterwards). But I'll try it when I have the time.
    Thank you for answering my question.

  6. #6
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    Solved

    Hello all. I wanted to make an update.

    I have bought two of 8 GB Kingston SDRAMS (shown below) I have just inserted them in the two slots back, started the laptop and.... wonderously I know seem to have all the 32 GB of RAMS available ?
    So my lost 8GB of ram has somehow returned to me after putting two extra rams in the back with same amount.
    Well a surprise certainly, but a very pleasant one.
    Thanks to all who helped me.
    Respects ! And have a great day !

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