Solved - "Secure Boot Violation" error after recent Windows Updates | Windows 8 Help Forums
Windows 10 | Invalid signature detected. Check Secure Boot Policy - Microsoft Community
Restoring UEFI boot entry via motherboard replacement or BIOS update - Thomas-Krenn-Wiki
How to fix Secure Boot Violation on Windows 10/7
Secure Boot Violation” may display when Secure Boot is enabled in BIOS and attempting to boot into Ubuntu and Debian - ThinkStation - Lenovo Support CH
ASUS Error: Invalid Signature Detected. Check Secure Boot Policy in Setup – TechCrises.com