The PCG-71911M was originally designed for Windows 7.
If you cannot find a specific driver, reply with the Hardware ID (VEN/DEV) of the missing device, and I can help locate the exact working driver version. drivers sony vaio pcg 71911m drivers
Before downloading drivers, you need to know which specific chips are inside your laptop. The same model number can ship with different Wi-Fi cards, audio chips, or touchpads. The PCG-71911M was originally designed for Windows 7
Sites like LaptopVideo2Go or DriverGuide.com host user-uploaded Vaio driver packs. Search for “Sony Vaio SVE151 drivers”. If you cannot find a specific driver, reply
These older drivers may require workarounds: