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Windows 7: Windows 7 - 8GB ram only 3.99GB usable

03 Sep 2012   #1
614spidermonkey

Windows 7 Professional 64bit
 
 
Windows 7 - 8GB ram only 3.99GB usable

Windows 7 Professional 64 bit - Has 8gb of ram (4x2gb), but system is only showing 3.99 usable. (Asus p7p55d board, Intel Core i7 860 - 2.80ghz)

Slot 4 has a different 2gb card in it than the others (though still corsair)

I've attached some CPUz SPD snips

Thanks!

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My System SpecsSystem Spec
.
03 Sep 2012   #2
LewisHolcombe

Windows 7 Ultimate 32 bit OEM
 
 

I had this problem. Is it an old computer? Please share all your specs?
My System SpecsSystem Spec
03 Sep 2012   #3
Mandydeth

Windows 8 64bit
 
 

Have you reseated all the ram or used memtest?
You're 100% sure you're in 64-bit and not 32-bit?
Does BIOS show all 4 sticks?
My System SpecsSystem Spec
.

03 Sep 2012   #4
GeneO

Windows 10 Pro. EFI boot partition, full EFI boot
 
 

Well they seem to be all recognized by the BIOS as they are all seen in the memory tab.
Make sure memory remapping is enabled in the BIOS. It should have been by default tho.
My System SpecsSystem Spec
03 Sep 2012   #5
sygnus21

Windows 10 Pro
 
 

Make sure the Maximum memory box isn't checked...

In the search box tyep "msconfig" (without quotes) click "msconfig.exe", click "Advanced Boot Options" and make sure the "Maximum Memory" box isn't checked. If so, un-check it. You'll probably have to re-boot after that. Then see what it says for memory.



That box actually limits the amount of memory the system uses, especially on a 64-bit OS.
My System SpecsSystem Spec
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 Windows 7 - 8GB ram only 3.99GB usable




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