: Use the Update Driver Software option in Device Manager to let Windows 7 search automatically online. Critical Hardware Components For a standard PCG-61A11U (often part of the VPC-EG series), you typically need: Chipset : Intel Chipset Driver.
Before reinstalling Windows 7, create a full backup of your existing drivers using a tool like Double Driver . That is the safest way to restore them later. sony vaio pcg-61a11u drivers windows 7 64 bits
Because Sony’s official links are dead, here’s a verified working strategy: : Use the Update Driver Software option in
Wireless LAN (Wi‑Fi)