If Sony site lacks files or you prefer alternatives:
The following components require specific drivers to function correctly on your VAIO. While Windows 7 may include generic drivers, using the official Sony or manufacturer versions ensures full feature support (like hotkeys and screen brightness controls). sony vaio pcg 71315l drivers for win7
This is required before installing any other Sony-specific utilities (like function keys or power management). Sony Firmware Extension Parser (SFEP): If Sony site lacks files or you prefer