So I just got a new computer recently for multi boxing and when I started it up, it says it only has 3GB of RAM. I checked inside the system and the 4 chips were there with 1GB each. I also checked the BIOS and it said there was 4GB. But when I run my 4-boxing on my one computer, the Task Manager shows my Max RAM as 3GB.

Anyone know what is happening?

My system specs:
20" widescreen
Inter Core2 Quad CPU 2.40GHz
Windows Vista Home Premium
NVIDIA GeForce 8800 GTX