Hello, hopefully someone can help me. I have a Dell Dimension Dim 3000 computer, with OS: Microsoft Windows XP, Home Edition, Version 2002, SP3 (32-bit). When I got the computer in 2005, the original RAM was 256 mb. My dad had installed 1 GB, which I forgot about. Lately my computer has been horribly slow. Did virus check, disk defrag, and deleted programs. System is showing only 256 mb, but my BIOS recognizes any change right away. Right now it read 1024 mb, but Windows is not changing at all. I'm not even close to the maximum this computer can hold. Anyone have any ideas as to why it's not reading it? (This seems to happen to a lot of Dells).