Unlike generic PCs, the Vaio requires Sony’s utilities to make the special hardware work:
Users who attempted to install Windows 7 on their Sony Vaio Pcg 31311X laptop faced several challenges. One of the main issues was the lack of compatible drivers. The laptop's hardware components, such as the graphics card, sound card, and network adapter, required drivers that were compatible with Windows 7. Without these drivers, the laptop's hardware components would not function properly, leading to a poor user experience. Drivers Sony Vaio Pcg 31311X Windows 7
Since Sony’s official site is gone, use these options: Unlike generic PCs, the Vaio requires Sony’s utilities
Below are the critical components and where to locate their drivers. Unlike generic PCs
Select > Reinstall Applications and Drivers to restore factory-original drivers from the hidden recovery partition.