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Miguel Manison
Miguel Manison

Lenovo G40-80 BIOS Update - Windows 7/8/8.1/10 Download and Installation Guide


How to Download and Install BIOS for Lenovo G40-80 Laptop




If you own a Lenovo G40-80 laptop, you may want to update your BIOS (Basic Input/Output System) firmware from time to time. Updating your BIOS can improve your system stability, performance, compatibility, and security. In this article, we will show you how to download and install the latest BIOS update for your Lenovo G40-80 laptop using three different methods: via the BIOS environment, via BIOS Flashback, and via Windows software. We will also provide some tips and warnings to help you avoid common errors and risks.


What is BIOS and Why You Need to Update It




BIOS is a low-level software that is integrated in a ROM chip on your motherboard. It contains the basic input/output program, system configuration information, system startup self-check, and pre-setup programs. BIOS provides the most basic hardware operations; it is the connection between software and hardware, and the interfacing window of hardware and operating system.




download bios lenovo g40-80



Updating your BIOS can have several benefits, such as:


  • Fixing bugs or glitches that cause system crashes or instability.



  • Adding support for new hardware components or features, such as CPUs, graphics cards, memory, or ports.

  • Improving performance or thermal management of your system.



  • Patching security vulnerabilities that could expose your system to hackers or malware.



However, updating your BIOS is not always necessary, and it can also be risky if done incorrectly. You should only update your BIOS if you have a good reason, such as experiencing a problem with your motherboard, installing new hardware that requires a newer version of BIOS, or addressing a security issue. You should also make sure that you download the correct and compatible BIOS update file from the official Lenovo website, and that you follow the instructions carefully. If you power off or restart your computer during the BIOS update process, you could damage your BIOS and render your computer inoperable.


How to Check Your Current BIOS Version and Model Number




Before you decide to update your BIOS, you need to know which version number you have so you can compare it with the list of available updates on the Lenovo website. You also need to know your computer's model number so you can find the compatible BIOS update file for your laptop. There are two ways to check your current BIOS version and model number:


Using System Information




  • Open Start by clicking the Windows logo in the bottom-left corner of the screen or pressing the Win key.



  • Type msinfo into the Start window, then click System Information at the top of the Start window.



  • Click System Summary on the left side of the window.



  • Check your computer's model name next to the System Model heading. You'll see a list of numbers and letters; this is your computer's model name. For example, G40-80.



  • Find your BIOS version number next to the BIOS Version/Date heading. You'll see a company name, your computer's model name, and a number after a period. The number after the period is your BIOS version. For example, A0.



Using Command Prompt Using Command Prompt




  • Open Start by clicking the Windows logo in the bottom-left corner of the screen or pressing the Win key.



  • Type cmd into the Start window, then click Command Prompt at the top of the Start window.



  • Type wmic bios get smbiosbiosversion and press Enter. This will display your BIOS version number. For example, A0.



  • Type wmic csproduct get name and press Enter. This will display your computer's model name. For example, G40-80.



How to Download the Latest BIOS Update File from Lenovo




Once you know your current BIOS version and model number, you can visit the Lenovo support website to download the latest BIOS update file for your laptop. Here are the steps to do so:


  • Open your web browser and go to .



  • Type your model name (G40-80) in the search box and press Enter.



  • Select your laptop from the list of results.



  • Click on Drivers & Software on the left side of the page.



  • Select BIOS/UEFI from the drop-down menu under Component.



  • You will see a list of available BIOS update files for your laptop. Compare the version numbers with your current BIOS version and choose the latest one. For example, if your current BIOS version is A0, you can choose A1 or higher.



  • Click on the download icon next to the file name and save it to a USB drive. Make sure that the USB drive is formatted as FAT32 and has enough space for the file.



  • Eject the USB drive safely from your computer and keep it ready for the next step.



How to Update BIOS via the BIOS Environment




The first method to update your BIOS is via the BIOS environment itself. This means that you will boot into the BIOS setup menu and load the update file from there. This method is recommended if you have a stable power supply and a reliable USB drive. Here are the steps to follow:


  • Insert the USB drive with the BIOS update file into your laptop.



  • Shut down your laptop completely and wait for a few seconds.



  • Press and hold the F2 key while pressing the power button to turn on your laptop. This will launch the BIOS setup menu.



  • Navigate to the Boot tab using the arrow keys and change the boot order so that the USB drive is the first option. You can use the +/- keys to move items up or down in the list.



  • Navigate to the Exit tab and select Save Changes and Exit. Press Enter to confirm. This will restart your laptop and boot from the USB drive.



  • You will see a prompt asking you if you want to update your BIOS. Press y to proceed.



  • The BIOS update process will begin and you will see a progress bar on the screen. Do not power off or restart your laptop during this process, as it could damage your BIOS and render your computer inoperable.



  • When the BIOS update is complete, you will see a message saying that it was successful. Press any key to reboot your laptop.



  • You can remove the USB drive after rebooting and check your new BIOS version using System Information or Command Prompt.



How to Update BIOS via BIOS Flashback




The second method to update your BIOS is via BIOS Flashback. This is a special feature that allows you to update your BIOS without entering the operating system or even turning on your laptop. This method is useful if you have a corrupted or inaccessible BIOS, or if you want to avoid any potential interference from Windows or other software. However, this method requires a specific port and button on your motherboard, which may not be available on all models of Lenovo laptops. Here are the steps to follow:



  • Insert the USB drive with the BIOS update file into your laptop.



  • Rename the file to BIOSTOOL.BIN. This is necessary for the BIOS Flashback feature to recognize it.</ Shut down your laptop completely and wait for a few seconds.



  • Locate the BIOS Flashback port and button on your motherboard. The port is usually a USB 2.0 port with a white or blue color, and the button is usually a small round button with a lightning symbol. Refer to your laptop's manual or online documentation for the exact location of these components.



  • Press and hold the BIOS Flashback button for about three seconds. You will see a LED light next to the button start blinking. This indicates that the BIOS update process has started.



  • Do not power on or touch your laptop during this process, as it could damage your BIOS and render your computer inoperable.



  • When the BIOS update is complete, the LED light will stop blinking and turn off. You can then power on your laptop and check your new BIOS version using System Information or Command Prompt.



How to Update BIOS via Windows Software




The third method to update your BIOS is via Windows software. This means that you will use a program provided by Lenovo to download and install the BIOS update file from within Windows. This method is convenient and easy, but it may not work if you have a corrupted or inaccessible BIOS, or if you encounter any errors or interruptions from Windows or other software. Here are the steps to follow:


  • Open your web browser and go to .



  • Type your model name (G40-80) in the search box and press Enter.



  • Select your laptop from the list of results.



  • Click on Drivers & Software on the left side of the page.



  • Select BIOS/UEFI from the drop-down menu under Component.



  • You will see a list of available BIOS update files for your laptop. Compare the version numbers with your current BIOS version and choose the latest one. For example, if your current BIOS version is A0, you can choose A1 or higher.



  • Click on the download icon next to the file name and save it to your computer.



  • Double-click on the downloaded file and follow the on-screen instructions to install it. You may need to accept some terms and conditions, enter your administrator password, or restart your computer during this process.



The BIOS update process will run automatically and you will see a progress bar on the screen. Do not power off or resta


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