Secure boot violation the system found unauthorized changes on the firmware

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• Fixed! The System Found Unauthorized Changes on the Firmware

By Stella | Follow | Last Updated December 10, 2020

The system found unauthorized changes on the firmware is an error message you may receive if you are still using Windows 7 or even an older version. Why does this issue happen? Is it possible to fix it? If yes, how to solve the problem? In this post, MiniTool Software will show you the answers you want to know.

Many of you are facing the error message of the system found unauthorized changes on the firmware operating system or UEFI drivers when starting the Windows computer or when you want to wake up the computer from hibernation mode.

According to the users’ report, this issue always happens after installing some pending Windows updates. If you are also bothered by the system found unauthorized changes on the firmware, do you know how to get rid of this issue and then use the computer as normal.

If you don’t know what to do, you can read this post to know the reasons for this issue and how to fix this problem.

The Optional Windows Update

The system found unauthorized changes on the firmware error message often happens after you install an optional Windows Update like KB3133977. This update means to patch a Bitlocker vulnerability. But this may change the firmware signature, making you receive the error message of the system found unauthorized changes on the firmware operating system or UEFI drivers.

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.

Secure Boot

If you are using Windows 7 or an older version and you have installed a pending Windows update, this issue can easily happen.

Why?

The system bootloader may be replaced with another one that is improperly signed by Microsoft. The update may force enable Secure Boot on your computer, but Windows 7 doesn’t support Secure Boot.

How to FixSystem Found Unauthorized Changes on the Firmware?

1. Disable Secure Boot
2. Perform a system restore

Method 1: Disable Secure Boot

Since Windows 7 doesn’t support Secure Boot, you can disable it to have a try.

1. Press the Power button. Then immediately press the BIOS/UEFI key repeatedly until you see the settings menu. The BIOS/UEFI key is usually one of F2, F4, F6, F8, or DEL (if you are using a Dell computer).
2. After entering the BIOS/UEFI settings, you can go to find Secure Boot and access it.
3. Modify the operating system type from Windows UEFI mode to Other OS.
4. Save the changes and reboot your computer.

This time, your computer should boot normally.

Method 2: Perform a System Restore

If the first method can’t solve your issue, you can perform a system restore to make the computer go back to a previous state in which it can work normally. But you need to make sure that you have create a system restore point (this post also shows you how to perform a system restore) before.

Now, you should know how to fix the system found unauthorized changes on the firmware. We hope these two solutions are useful for you.

If you lose some important data when solving this issue, you can use MiniTool Power Data Recovery, a free file recovery tool, to recover your files.

This software has a trial edition. You can use it to scan the drive you want to recover data from and check whether you can find your needed files.

Free Download

If you want to use this software to recover files, you can upgrade it to a full edition.

About The Author

Position: Columnist

Stella has been working in MiniTool Software as an English Editor for more than 4 years. Her articles mainly cover the fields of data recovery including storage media data recovery and phone data recovery, YouTube videos download, partition management, and video conversions.