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Where did the other .8 GB of RAM go?
Why does Windows only show about 3.5GB of my 4GB+ of RAM?

Does anyone know why in Windows 7 Resource Monitor shows that I have 8 GB of RAM installed on my computer, but I only have 3.2 GB available as 4.8 GB are in "Hardware Reserve". I researched this issue and tried going into msconfig and making sure that in the boot options the number of processors and max memory options were turned off. I also opened the computer up and reseated each of the memory sticks while clearing out any dust that was in there.

Some info on the system I am using:

OS: Windows 7 Enterprise 64-bit Edition
CPU: AMD Phenom X4 9750
Memory: 4 X 2GB DDR2 memory
Motherboard: MS-7548 (Aspen)

Any help would be much appreciated.

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migrated from stackoverflow.com Nov 13 '11 at 23:52

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marked as duplicate by Journeyman Geek, Moab, Ƭᴇcʜιᴇ007, random Nov 14 '11 at 3:42

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Are you using onboard graphics? –  slugonamission Nov 13 '11 at 23:25
    
64-bit Windows contain both 32 and 64 bit versions Resource Monitor. Are you run 64-bit version from System32 folder? –  Aleksandr Vishnyakov Nov 13 '11 at 23:29
2  
Never mind, I'm an idiot.... I accidentally installed the 32-bit version of Windows 7 and thought I had installed the 64-bit version. It makes perfect sense now why I am only seeing 3.2 GB of memory, I'm sure the onboard graphics card accounts for the majority of the .8 that I am not able to use. –  Brandon Nov 13 '11 at 23:44
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