I have a Sony Vaio laptop with Win7 Ultimate OS, 4Gb RAM. At first, we were able to install 32-bit after reformatting, and thought it was a mistake becoz we're not that familiar abt the diff bet 32 and 64-bit. Later, we reformatted it to 64-bit and encountered quite a problem. I am playing a browser game but the respond is very slow compared to the 32-bit we had. It looks like the performance is slower than before. what could be itsproblem? Please help. Thanks!