If you have an MSI laptop PC with an UEFI firmware, here's how to configure its BIOS (American Megatrends).
To enter the BIOS of your MSI laptop PC, press the "Delete" key several times on your keyboard when it starts up.
Once you are in the BIOS of your MSI laptop, go to the "Boot" tab, select the "Boot mode select" option and press Enter.
Select "UEFI" and press Enter to validate.
When you start your laptop in UEFI mode, you can enable Secure Boot to secure booting.
To do this, go to the "Security" tab, then in : Secure Boot menu.
Enable the "Secure Boot Control" option to enable secure boot.
Note : the value displayed in black for the "Secure Boot" option doesn't update in real time. Only when you enter the BIOS.
Important : the Secure Boot is not supported by Windows 7. It's only supported by Windows 8, 8.1 and 10.
If the value of the "Boot mode select" option was different from "UEFI", this warning will be displayed.
CSM is Loaded ! Disable the CSM in Setup and try again after Reboot
The reason is simply that Secure Boot is only possible in UEFI mode.
But since we just selected "Boot mode select : UEFI", we can ignore this warning.
For the "Secure Boot Mode" option, leave it on "Standard".
Optional : UEFI already makes it possible to speed up the startup, but you can also speed up the startup of your computer a little more by enabling the "Fast Boot" option in the "Boot" tab.
Now that your MSI laptop is configured to boot in UEFI mode, you need to configure the boot order of it to :
Select "Boot Option #1" and press Enter.
Select "CD/DVD" (which corresponds to the built-in CD/DVD drive of your MSI laptop PC).
Then, select "Boot Option #2" and press Enter.
Select "Hard Disk" (which corresponds to the internal hard drive of your MSI laptop PC).
Finally, go to the "Save & Exit" tab and select "Save Changes and Reset" to save the changes.
Confirm saving the changes.
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