Wi-Fi and Bluetooth will not work without this specific driver. Generic Windows drivers cause frequent disconnections.
While specific models vary, most SVS13 laptops share these core hardware components: Drivers and Software updates for SVS13125CXB | Sony USA
Search for Sony VAIO SVS131C1DW Drivers on archive.org. Users have uploaded the original recovery discs and driver packs here.
The foundation for all other hardware communication. Usually the Intel HM76/HM77 Express Chipset driver.
Share your links in the comments to help fellow VAIO owners keep these classics running.