If your Windows computer is not booting up and displays Secure Boot Violation – The system found unauthorized changes on the firmware, operating system or UEFI drivers error message on the screen, then you can follow this tutorial to troubleshoot the problem.
This error message appears because of Secure Boot, which protects your system from running non-OEM signed boot software at the startup. The Secure Boot firmware scans for non-signed boot software at every startup, and if it finds anything unusual, it blocks the boot and shows such error message.
To fix this problem, you need to follow these two suggestions:
- Disable Secure Boot
- Use System Restore Point