I'm running Windows 7 Ultimate on an eMachines E642. I bought the laptop with 1GB built in and had them add an additional 2GB. Unfortunately, right now the system only reports seeing 763 MBs. It's ridiculous - I can't even run 5 tabs in my browser without taking up 90% of my ram. Screenshots of the System screen and Task Manager attached.
Anyway, I'm aware of the "only seeing 3GB out of 4GB" problem people experience with x64: x64 Win7 is reporting only 3GB out of 4GB RAM
After reading through a few threads, I'm pretty sure that's not the issue. I'm only seeing 760MBs out of 3GBs, I don't think that's my graphics card / OS taking up the RAM.
One solution I wish I could try is the memory remapping. There is no "Chipset" option in my BIOS and I don't see memory remapping anywhere. And yes, I've updated to the latest BIOS.
Thanks guys =)