If your volume and brightness shortcuts do not work, it is a software sequencing issue. You must install the Sony Shared Library, Sony Notebook Utilities, and VAIO Event Service in that exact order, rebooting between each installation. Unknown Devices in Device Manager
If you downloaded a .zip folder, right-click it and select . Choose a destination folder that is easy to remember (like your desktop). Step 2: Use Device Manager Right-click the Start button and select Device Manager . drivers sony vaio pcg 71911m drivers
Allows the operating system to communicate properly with the motherboard and components. If your volume and brightness shortcuts do not
For newer VAIOs only – not for PCG-71911M. Sony sold the VAIO division in 2014. Your laptop is pre-2014, so this won’t help. Choose a destination folder that is easy to
Look for devices marked with a (these indicate missing or broken drivers).