If you are manually hunting for drivers, these are the core components used in the PCG-31311X / VPCYB series: it-craft.ru What is the VAIO Update utility? | Sony Latin America
Below are the essential components and their driver status on Windows 7 (32-bit or 64-bit). Drivers Sony Vaio Pcg 31311X Windows 7
This model typically uses an AMD chipset. You can download these directly from the AMD Support Site rather than waiting for Sony's version. Atheros/Realtek Network: Usually used for Wi-Fi and LAN. Troubleshooting Tip Drivers and Software updates for Personal Computers - Sony If you are manually hunting for drivers, these