Windows 7 3gb ram, not 4gb ram problem

[miniclip22]

Hi all, I have bought last year a desktop computer, now with windows 7 ultimate 64 bits, and it only shows 3GB of RAM, instead of 4 GB of RAM. On the first release of windows 7, build 7000, it showed perfectly fine the 4GB, but on RC and RTM, Windows 7 only sees 3GB.
I would be very happy if you could tell me why is this happening, so that I can unleash the full pottential of Windows 7 Ultimate.

Thanks in advance!

 

[Agent Data]

...Also, I have heard of an option in my BIOS called Memory Hole Remapping, but I am not sure if it affects all the RAM. Any help would be appreciated.

looks like you got an old board design since newer boards no longer have this option (mem hole). Yes, disabling the remap should fix the issue.