Originally Posted by PRC09
Maximum memory 4 GB
Addressing Memory With 4-GB Configurations
Your computer supports a maximum of 4 GB of memory when you use four 1-GB DIMMs. Current operating systems, such as Microsoft® Windows® XP, can use a maximum of 4 GB of address space; however, the amount of memory available to the operating system is less than 4 GB. Certain components within the computer require address space in the 4-GB range. Any address space reserved for these components cannot be used by computer memory.
So that doesn't look too good. The OP could look at a "memory hoisting / remapping" setting in the BIOS, but the above information seems to exclude that.
At the same time, I must confess I still don't understand this info given by the script:
The first two lines are good news; they mean memory above 4GB is seen/reported by e820 (run 'dmesg | grep -i e820'). See http://en.wikipedia.org/wiki/E820 . As said by that wiki page: if you run memtest, what do you get?
BIOS offers 7421 MB as usable
BIOS offers 6650 MB as 'modified' usable
Memory seen by OS 3269 MB