To update the BIOS of an Asus motherboard with an UEFI BIOS like ours (see point 2 of the tutorial), here is the procedure.
Note : the procedure is not the same for all motherboards because they are all different.
To update the BIOS of your motherboard, you only need to go on your motherboard manufacturer's website.
Important : never go to another website than that of the manufacturer at the risk of making your motherboard permanently inoperable.
Look for the model of your motherboard on their website and go to the "Drivers" or "Downloads" section according to the manufacturers. Then, select your operating system.
You will find a BIOS section with the different updates available.
In our case, our BIOS is the 1404 version (see point 2 of the tutorial) and the Asus site proposes the 2403 version as the last version update at this time.
So, we download the 2403 version that was released on 04/18/2014.
Note : Images of this tutorial are from the time when we did this BIOS update of our old motherboard.
In our case, Asus provides us a zip file.
Unzip this zip file and go to the folder that appears.
In this folder, you will find the BIOS.
This file can have different extensions : rom, cap, bin, ...
It depends of manufacturers and motherboard models, but the principle is the same, whatever the file extension.
In our case, our BIOS has the ".CAP" extension.
We copy the file on an USB key.
And we reboot the PC to flash the BIOS using ASUS EZ Flash 2.
At startup, before Windows starts, press several times on the DEL key of your keyboard.
As you can see, now, our BIOS version is 1404.
To flash (update) the BIOS of your motherboard, go to the "Tool" menu and select ASUS EZ Flash 2 Utility.
Select your USB key in the left column. In our case, we had named it : "INFORMATWEB".
On the right side you will see the BIOS file that you copied on your USB key.
In our case, the file "P8Z77-V-LX-ASUS-2403.CAP". Click on it with the mouse.
Asus asks if you want to read this file. Click OK.
And if you really want to update the BIOS of your motherboard. Click OK.
In theory, all newer motherboards check the BIOS file to use before updating the BIOS of the motherboard.
ASUS EZ Flash 2 updates the BIOS of the motherboard.
Note : With some motherboards, you will see that the BIOS is first erased and then updated with the file used.
Once the update is complete, the message "Update Successfully! System will be reset!" will be displayed.
The computer turns off abruptly and turned on again automatically after 10-20 seconds. This is quite normal so do not touch anything and wait.
After this time, the computer will turn on itself (as you can see in our video).
The logo of the motherboard is displayed.
And an error "MBR Error 1" may be displayed.
Indeed, the BIOS update has caused a loss of your BIOS setup (which is normal).
Restart your computer, and press several times on the DEL key to enter into the BIOS of your motherboard.
As you can see, now, the BIOS version is 2403.
To resolve the problem of this error "MBR Error 1", simply reconfigure the BIOS boot order like this : Change the BIOS boot priority
To change the boot order, go to the Advanced mode by clicking on the "Advanced Mode (F7)" button at the bottom of the screen.
In the Boot tab, scroll down with the mouse wheel and you'll find the "Boot Option Priorities" section.
As you can see, you have :
Because we have several hard disks in our computer, we click on "Hard Drive BBS Priorities".
We click on the value of the line "Boot Option # 1" and we select our SSD "Samsung SSD 840 PRO Series" on which Windows is installed.
Then, the order of the other hard disks is not important.
Return to the previous menu, and set the global boot order :
Finally, click on the "Exit" button on the top right, then click "Save Changes & Reset".
Keyboard shortcut : F10 (Save).
Click Yes to confirm.
The computer restarts automatically.
And Windows will start properly.
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