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8 GB RAM only 3.90 GB Usable

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November 14, 2013 11:14:14 PM

8GB Only 3.90 GB usable
as per mobo manual i install KHX1600C9D3B1/4G RAM on slot A2 and B2



But BIOS show only 4 GB total RAM

CPUZ show 8GB But Windows show 8GB 3.90 GB usable



Same happen if i install RAM on A1 B1 slot
PC won't Boot if i install RAM on B1 B1 slot
If i install RAM on A1 A2 slot

BIOS show 8GB RAM

Windows also able to use all 8 GB RAM now

I Build totally new PC With
2x Kingston HyperX Blu DDR3 4 GB PC RAM (KHX1600C9D3B1/4G)
AMD FX 6300 (no overclock ) none pin bend
Asus M5A97 LE R2.0

Help me guys

More about : ram usable

a b V Motherboard
November 14, 2013 11:47:45 PM

install ram, slots 1 and 3 or 2 and 4 ok then it should post alright.
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November 14, 2013 11:53:24 PM

johnnyb105 said:
install ram, slots 1 and 3 or 2 and 4 ok then it should post alright.


if i put it on slot 1 & 3 i get only 4gb ram

windows show me 8GB (3.97GB usable) same with slot 2 & 4

if i put it in slot 1 & 2 is see all 8GB ram usable . but that's only on Single Channel mode
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November 15, 2013 10:57:36 PM

main post update with detail . plz help me guys
mod plz move this post to RAM section if required
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November 15, 2013 11:34:35 PM

press windows key and r

type msconfig

click on boot, then advanced options, and make sure both cpu and ram is unchecked at the top then restart.
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November 16, 2013 1:10:59 AM

aj2013 said:
press windows key and r

type msconfig

click on boot, then advanced options, and make sure both cpu and ram is unchecked at the top then restart.


it's already unchecked
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November 29, 2013 7:26:48 AM

BUMP
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December 2, 2013 4:11:14 AM

is it motherboard issue . i check RAM stick and don't get any problem with it
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!