Amount of memory not stable

i know that using certain type of OS with a CPU can result in lowered amount of memory
i updated the mainboard using "liveupdate"
Mainboard : MSI 990 FX GD-80
OS : windows 7 ultimate 64 bit
CPU : FX 4170
Memory : 4x4 GB 2133 MGHZ
PSU : XION 1000(W)P14F
all BIOS settings remain default and it result in such behavior
the memory randomly go from 4 GB to 16GB when i booted until i restart it
i've never overvolted my memory sticks
DRAM frequency is auto
my DRAM voltage is auto
and timing is auto
my programs doesnt crash
i think it might be timings.. cuz i checked voltage from various programs and it seem okay
and when i undervolt it(just a little bit).. programs crashes

i found the spec on the webpage of the memory manifacturer -> http://www.mushkin.com/Memory/Blackline/997015.aspx
Q: if it did that before live update...
A : lol i dont know seriously.. the first thing i did is update
http://imageshack.us/photo/my-images/831/meht.jpg/
http://imageshack.us/photo/my-images/819/spdj.jpg/
ok ill bump it from 1.52 to 1.54
Q: if i bought that in a kit of 4
A : i bought 2 kit of 2.. infact..lol but its the same models
** edit
infact the problem is not that if its seen or not.. its like..
i recently boot up and it seem i can only access 1 dimm of memory
because apparently 12 GB is allocated for hardware and the BIOS or something

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Attachments:
FW_VMFreeMap - Copy.vi ‏46 KB

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Hi
Thank you for reading my post
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Here is the screenshot.
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Hi,
à
Any Chance to set the memory limitations via PS Script?
Please use
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WSUS-Limit SQL (Windows
Internal Database) memory
Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft
does not guarantee the accuracy of this information.
à
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Amount of memory not stable

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