RAM dropped from 6GB to 4GB, Vista 64, Asus P6T SE motherboard

By Swayum
Aug 19, 2010
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  1. So recently I was looking into overclocking my computer, I just copied an easy method a YouTube video showed me but then the cores got pretty hot and I didn't pass a stress test (computer turned itself off during it). So I went into the BIOS and reset everything to default and everything seemed to be running fine.

    A few days later and I notice it's all slowed down quite a lot and I've just identified that the problem is the RAM. Task manager shows me that my CPU usage is usually pretty low but my physical memory is usually pretty high (admittedly partly because I have lots of pointless applications, but they were all there before and it was running fine).

    I bought this computer with 6 GBs of RAM but the Windows Vista Welcome Centre shows only 4 GBs now for some reason. I don't understand why because I haven't even opened the computer at any point, so it's nothing physical.

    When I use a program call CPU-Z, it shows what's in the image attached as 'cpu z.jpg'

    So CPU-Z recognizes that I do have 6 GBs of RAM, so why doesn't Windows Vista? I've reset everything to defaults in the BIOS.

    Here are my specs if you need them:

    CPU: Intel® Core i7 920
    CPU Cooler: Coolermaster V8 LGA1366
    Motherboard: Asus P6T SE (Intel X58 chipset, IncludedCrossfire)
    Memory: 6.0GB Corsair DDR3 1333mhz XMS3 CL9
    Hard Drives: 500GB S-ATAII 3.0Gb/s
    Optical Drive: 5x Blu-Ray ROM S-ATA DVD±RW
    Second optical drive: 20x DVD±RW DL S-ATA Lightscribe
    Graphics card: NVIDIA GeForce GTS 250 1GB
    Sound card: Asus Xonar D1
    Operating System: Microsoft® Windows Vista Home Premium SP1 64-bit
    Accessories: PCI Digital TV Tuner Card
    PSU: 700W EZCool Tornado

    And yes, I have run Windows Update and stuff - remember, it used to show 6 GB and I haven't uninstalled anything, so it should still be able to.

    Would seriously appreciate any help on this one. I have uploaded pics of the BIOS.

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  2. crunchie

    crunchie Malware Helper Posts: 761

    I would personally remove all the RAM except for one stick (no power to the pc first) and then reset the bios, either by the board jumper, or by removing the cmos battery.
    Boot the computer to make sure it starts ok.
    Do this again adding one stick at a time.
    Once you have all your RAM in, reset the bios again and then power up the pc.

    Fingers crossed.
  3. Swayum

    Swayum Newcomer, in training Topic Starter

    Thanks a lot, it worked (not sure what you meant about the BIOS stuff, but replugging them worked).
  4. crunchie

    crunchie Malware Helper Posts: 761

    No worries :).


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