Windows 7 not recognizing all RAM

I installed windows 7 ultimate 64 bit. when I look at the system specs in windows it shows 2gigs of ram with 1.7 available. Yet I have 4 gigs installed. Any way to get the system to recognize the additional RAM?

RoDeLoPo wrote:
After installing Windows 7, I realized that I am not able to use all my RAM. Out of the 8GB I have, Windows only seems to be using 2.17GB of it. If I check my memory usage with Recourse Manager, 5972MB of RAM are reserved for hardware. Even though my system is the 32-bit version, shouldn't I have 4GB of RAM available (at the moment it only uses 2.17GB)?
Of the 3.99GB that a 32 bit system can address some will be used for Video buffers (same amount as the Vram allocated to the card) as well as other memory requirements. Everything Windows needs to address must be below the 32 bit limit, some will left for program useage, but not a lot.
Buy a 64 bit copy of Windows.

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