BIOS Update for Windows 7 (32-bit, 64-bit), Windows 8 (32-bit, 64-bit) – Lenovo G400, G500

NameOperating SystemVersionReleasedDownload
BIOS Update
78cn23ww.exe
4.41MB
Windows 7 32bit,
Windows 7 64bit,
Windows 8 32bit,
Windows 8 64bit
2.0103 Nov 2013 Download
README of BIOS Update
78cn23ww.txt
2.97KB
Windows 7 32bit,
Windows 7 64bit,
Windows 8 32bit,
Windows 8 64bit
2.0103 Nov 2013 Download

Supported Systems


  • Lenovo G400, G500

Supported Operating Systems


  • Windows 7 (32-bit, 64-bit), Windows 8 (32-bit, 64-bit)

Important Information


  • This package updates the basic input/output system (BIOS) on IdeaPad G400\G500.

    BIOS, abbreviation of Basic Input/Output System, is integrated in ROM chip on main board, which contains the basic input/output program, system configuration information, system startup self-check and pre-setup programs. BIOS provides most basic low-level hardware operations; it is the connection between software and hardware, and interfacing window of hardware and operating system.

    Note: Make note of any settings you have changed in the BIOS Configuration Utility. These settings may have to be re-entered after updating the BIOS.

    Attention: Do not power off or restart your computer during the BIOS 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.


Updated Information


  • Latest Version BIOS fixed all merged issues from previous.