For some Vaio models, Sony/VAIO provides a tool that can help update drivers and software. Check if there's a "VAIO Update" tool available on the support page for your model.
The Sony VAIO PCG-71911M Go to product viewer dialog for this item. drivers sony vaio pcg 71911m drivers
If you are doing a fresh install, these are the specific drivers you need to hunt down: For some Vaio models, Sony/VAIO provides a tool