The Sony VAIO is a chassis reference used for regulatory purposes rather than a primary support model name . To find official drivers, you must first identify the laptop's specific "marketing" or product name, which typically begins with VPCEH . Identifying Your Specific Model
Installing the wrong driver can cause conflicts. For example, a mismatched Wi-Fi driver will show “No connections available” even though the hardware works fine. drivers sony vaio pcg 71911m drivers