: Ensure your laptop is plugged into a wall outlet. Never update on battery power.
: After the computer shuts down completely, wait at least 60 seconds before pressing the power button to turn it back on. Troubleshooting and Access BIOS Update Utility (Windows 10 64bit, Windows 8.1 64bit) sony vaio pcg81114l bios update link
: If you use BitLocker encryption, suspend it before starting the update to avoid being locked out of your drive. Installation Guide : Ensure your laptop is plugged into a wall outlet
: Double-click the file and click Yes at the User Account Control prompt. sony vaio pcg81114l bios update link