I see there are a few RAM Upgrade problems but mine are slightly different to the ones already on the forum.
Basically I have just upgrade from 1gb to 2gb (2 x 1gb DDR2 533) but it does not show up in the BIOS as being upgraded. I know they are both being recognised and are working fine as I have tried them individually and in different slots and am working fine. I have also run CPU -Z which shows both slots being active and having 1024mb.
Any ideas what this could be? I am running Windows Vista (32bit) and PC does support 2gb RAM.