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4Gb of DDR3 ram, only 2Gb is Usable

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July 9, 2011 6:50:32 AM

Hi, sorry if this is a repeated question, I have GA p55 UD3 mobo with a 1st gen i5750. I have 4Gb of ram on the board, CPUZ shows 4Gb as does CCleaner, but in the sys info page it says only 2Gb is usable. Any starting points?
a c 216 V Motherboard
July 9, 2011 4:09:55 PM

Could you provide a bit more info like OS and version as well as an image of where you see 2 GB usable?
July 9, 2011 10:57:57 PM

OS windows 7 Ultimate 64bit
Cpu i5-750
Mobo Ga p55a ud3

img 1

2nd img


edit: another image that might be useful
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a b V Motherboard
July 10, 2011 12:36:09 AM

perhaps update the bios, reset the cmos and see what effect that has, also reseat the memory just incase

also there may be some boot.ini settings limiting your memory, or some bad legacy app perhaps - a fresh install will cover all this to confirm
July 10, 2011 12:45:09 AM

Turns out I had a bad stick of ram... messed around and it would boot up with one of the sticks in there.

Thanks any way guys
!