Without these components, Windows 10 64-bit treats your Fn keys as unknown input devices—effectively dead keys.
Sony provides a tool called the Sony Vaio Update Tool that can help you download and install the latest drivers, including the function keys driver. Here's how to use it:
Restoring your Sony Vaio Function keys on Windows 10 64-bit is entirely possible, but it requires patience and the correct sequence of drivers. Sony Vaio Function Keys Driver Windows 10 64 Bit
Many users spend hours letting Windows Search for drivers. On a Sony Vaio running 64-bit Windows 10, Windows Update almost never delivers the correct Fn driver. You need to install it manually.
A: That proves the hardware is fine. The issue is 100% software: either the SFEP driver is missing, or the Vaio Event Service is not running. Without these components, Windows 10 64-bit treats your
Drop the model number (e.g., SVS1511CFXB) in the comments, and I’ll help you find the exact driver link.
After installation, open Task Manager → Services tab, and ensure VAIO Event Service is running and set to Automatic. Many users spend hours letting Windows Search for drivers
Have a question not covered here? Check the comments below or visit the r/Vaio subreddit where users share updated driver packs weekly.