Atheros (or Broadcom) Wireless Network Adapter Driver
Windows 7 rarely packs native drivers for the specific WLAN cards used in the PCG-31311X Go to product viewer dialog for this item.
To narrow down the exact files you need, let me know if your Windows 7 installation is the , and whether you have any remaining Unknown Devices listed in your Device Manager. Share public link
Because Sony no longer actively maintains live support pages for legacy VAIO models, finding the original files requires using trusted archives.
Which is currently missing its driver? Share public link
| Problem | Solution | |---------|----------| | | Force install Realtek HD Audio using “Have Disk” method | | Brightness keys not working | Install Sony Notebook Utilities (from Vaio W series drivers) | | Wireless signal weak | Disable Bluetooth coexistence in Intel driver settings | | Sleep/resume failure | Disable “USB selective suspend” in Power Options | | Yellow exclamation for unknown device | Likely Sony Firmware Extension Parser (SFEP) – use Vaio Event Service |