- You have a certified Windows 8 or Windows RT UEFI-based computer and Secure Boot has been enabled in the computer's BIOS.
- You make changes to the computer's hardware. Examples would include adding a new graphics, networking or storage controller adapter.
In this scenario, Windows may no longer boot after the changes are made. You may encounter behaviors such as hanging at a black screen, Windows crashing with a blue screen, or BIOS error messages to change your settings.
For more information on Secure Boot, select one of the following links below:
Secure Boot Overview
Secure boot feature signing requirements for kernel-mode drivers (Windows)
Protecting the pre-OS environment with UEFI