Why does this issue happen?
Is it possible to fix it?
If yes, how to solve the problem?
In this post,MiniTool Softwarewill show you the answers you want to know.
According to the users report, this issue always happens after installing some pending Windows updates.
This update means to patch a Bitlocker vulnerability.
It especially happens to Windows computers that are using ASUS motherboards.
In a situation like this, this message is not harmful.
You still boot the system successfully and use the computer as normal.
The system bootloader may be replaced with another one that is improperly signed by Microsoft.
The update may force enableSecure Booton your box, but Windows 7 doesnt support Secure Boot.
How to FixSystem Found Unauthorized Changes on the Firmware?
This time, your box should boot normally.
Now, you should know how to fix the system found unauthorized changes on the firmware.
We hope these two solutions are useful for you.
This software has a trial edition.