Hello there, i just switched the broken HDD on an old PC with another one, formatted and installed Windows XP SP3 on it. The motherboard on the PC - nForce 3 250GB. When I got to 'My Computer'-->'Properties' it says 1.81 GHz 256MB of RAM, while there are 1.2GB of RAM. I checked my hardware using CPU-Z, and what I got is what I really have inside the PC: 2 X 512MB 1 X 256 MB and a total of 1.2GB the specifications of the three cards is the same, all PC3200(200MHz), and the only difference between them is the CAS Latency which is 2.5 on the 256MB card and 3 on the two 512MBs. Anyone knows what might be wrong?