Ah, yes that's a common mistake people make. They don't realize that Windows XP, Vista 32, etc. just can't do 4GB of ram if you put it in.
32-bit operating systems don't have the address space. They can at most see and use about 3GB and the rest is taken up by devices and legacy support.
Unfortunately, it's not something you can "fix" unless you switch him to a 64-bit operating system.
|