This package updates the NVIDIA Second VGA BIOS (VBIOS) on Y400 SLI and Y500 SLI.
Attention: Do not power off or restart your computer during the VBIOS flashing process, which will cause serious damage and improper functioning of your computer.
Print this file so that you can refer to it during the installation.
Check VGA Card Version
Select Device Manager
In Device Manager, select "Display adapters"
Make sure there exist "NVIDIA GeForce GT 650M" in it.
Install the Package in Windows
Keep machine in AC mode with at least 35% Battery;
Double click ProtectOff.bat;
Need to choose "1" for 2nd VGA option;
2nd VGA Protect function is off;
Double click the tool 2ndVGA_Winflash_Yx00.exe, and system will open CMD.exe;