What motherboard do you have that shows all 4GB in the BIOS? I'm running
WIndows Vista 64-bit and it is my BIOS that is supposed to show all 4GB but
only shows 3.2GB. Therefore Windows Vista x64 only sees 3.2GB. I'm pretty
sure it's the motherboard...older Asus P5AD2-E Premium.

"Waldosr" wrote:

I just installed an extra 2GB of RAM in my PC bringing the total to 4GB. My
BIOS is picking up the 4GB of RAM but vista says that I only have 3GB
installed. Any suggestions. I thought Vista supported up to 4GB