Sony Vaio Pcg-31311m Drivers Windows 7 [better]

Open Device Manager. Look under “Network adapters” – if you see “Unknown device” or “Network Controller,” note the Hardware IDs:

Manually install via "Have Disk" if the installer refuses. This enables Aero, hardware video decoding, and proper external monitor support through the Vaio’s VGA or HDMI port. Sony Vaio Pcg-31311m Drivers Windows 7

Sony has officially removed many legacy Windows 7 downloads from its primary servers, but you should still check the regional support pages using your model name: Sony UK Support Open Device Manager