When reinstalling Windows, drivers for this series must be installed in a specific sequence to ensure the "Fn" (function) keys and power management work correctly: Sony Video Shared Library (if applicable) VAIO Event Service (Enables volume/brightness keys)

📍 PCG-61111W 📍 Also known as: VAIO VPCF12 series / VPCF1 📍 Common OS: Windows 7 64-bit (originally), some run Windows 10

Avoid shady “driver updater” pop-up sites. Stick to known sources or hardware IDs (right-click device → Properties → Details → Hardware Ids).