Invalid signature detected. Check Secure Boot state in Setup” error | Support is >Here
How to Fix the 'Secure Boot Violation - Invalid Signature Detected' Problem on Windows?
Secure Boot Violation” may display when Secure Boot is enabled in BIOS and attempting to boot into Ubuntu and Debian - ThinkStation - Lenovo Support CH
Fix Invalid Signature Detected Check Secure Boot Policy in Setup || Windows 10 - YouTube
How to Fix the 'Secure Boot Violation - Invalid Signature Detected' Problem on Windows?