: Once you've selected your operating system, you'll see a list of available drivers. These may include chipset, graphics, sound, network, and other device drivers. Download each and follow the installation instructions.
Download the offline version (approx 16GB). Run it on your Vaio. It will detect the PCG-31311X and offer matching drivers for 90% of components, including the modified NVIDIA INF. Use the "Expert" mode for Optimus. Drivers Sony Vaio Pcg 31311X Windows 7
: Once you've selected your operating system, you'll see a list of available drivers. These may include chipset, graphics, sound, network, and other device drivers. Download each and follow the installation instructions.
Download the offline version (approx 16GB). Run it on your Vaio. It will detect the PCG-31311X and offer matching drivers for 90% of components, including the modified NVIDIA INF. Use the "Expert" mode for Optimus.