Secure Boot Violation Red Warning Screen

What is SECURE_BOOT_RED_SCREEN?

The motherboard BIOS displays a red warning screen stating 'Secure Boot Violation: Invalid signature detected' on boot, blocking startup.

Common Causes

• Unsigned operating system bootloader
• Malicious boot loader replacement (rootkit)
• Outdated bios keys

Step-by-Step Fix Guide

• 1
  Disable Secure Boot in BIOS settings temporarily

  Disabling Secure Boot bypasses signature checks, letting you boot back to check system state.

• 2
  Select 'Reset Secure Boot Keys to Default' in BIOS settings

  Resetting the keys restores secure handshake tables.

• 3
  Restore the Windows EFI partition

Commands & Diagnostics