Before downloading drivers, you must identify your specific model number. This is usually found on a small sticker on the bottom right of the screen bezel or via the BIOS.

The VAIO Event Service is likely missing or corrupted. Reinstall it, ensuring you also have the latest Microsoft Visual C++ Redistributables installed.

: For newer operating systems like Windows 10 , Sony recommends using the built-in Windows Update tool to automatically find compatible drivers.