Windows 8 with Secure Boot enabled may no longer boot after installing new hardware

[NICK ADSL UK]

Windows 8 with Secure Boot enabled may no longer boot after installing new hardware

Symptoms

Consider the following scenario:

•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.



Cause

This behavior may occur when Secure Boot has been enabled in your computer's BIOS. Secure Boot protects the integrity of the operating system and prevents unauthorized firmware, operating systems or UEFI drivers from interfering with the boot process.
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Resolution

To work around this issue, Secure Boot must first be disabled before installing new hardware. For more information on disabling Secure Boot in your computer's BIOS, reference the manual that came with your motherboard or contact your motherboard manufacturer. If you are in an enterprise environment, contact your system administrator.

http://support.microsoft.com/kb/2800...rss&spid=16799