Manages motherboard communication, SMBus, and power efficiency.

Sony Shared Library & Notebook Utilities (Restart after this step) 5. Troubleshooting Common Driver Issues The "Fn" Keys for Brightness/Volume Do Not Work

Before downloading drivers, it is crucial to understand exactly what the "PCG-31311L" is.

If an automated .exe installer fails, you can force install driver files using the Windows Device Manager: Press the and select Device Manager .

If you are missing the original recovery partition, you are not alone. Sony abandoned driver hosting, but the community has kept these machines alive. Follow this guide strictly, and your Vaio will run as well as it did in 2012.

Are there any specific currently showing up in your Device Manager?