OS is Win7 64 Home Premium. In System I'm getting that I have 4.00GB installed with 2.00GB usable.
Both of those were already deselected in msconfig. Thanks anyways though.
I'll post my Specs here:
CPU: AMD Phenom II 955
RAM: Corsair Dominator 1600MHz
Motherboard: Asus M4A785TD-V EVO
other than that I can't think of anything that's relevant.
it is very likely this has to do with your video card. there is a bios setting with some bios that allows for memory remapping, that is what you will want to do. i've spent the past day trying to figure this out for myself (4gb / 2.75 usable) but my bios (dell) doesn't support memory remapping with a 32 bit os.
the problem is that windows is using that memory as hardware reserved - you can verify this by going to the resource monitor: task manager -> performance ->resource monitor.
refer to this: http://support.microsoft.com/kb/978610