DOCUMENT:Q103568  30-AUG-1993  [W_NT]
TITLE   :Cannot Start Kernel Debugger on Compaq SystemPro
PRODUCT :Windows NT
PROD/VER:3.10
OPER/SYS:WINDOWS
KEYWORDS:

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The information in this article applies to:
 
 - Microsoft Windows NT operating system, version 3.1
 - Microsoft Windows NT Advanced Server, version 3.1
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SYMPTOMS
========
 
Your Compaq SystemPro stops responding (hangs) but does not allow the
kernel debugger to be started. Or, a device has an error (for example,
a parity error), but cannot use IOCHK to halt the machine.
 
CAUSE
=====
 
Compaq SystemPros do not honor the IOCHK signal on an EISA bus when
they are in multiprocessor mode. Moreover, they do not have any way to
successfully generate an NMI (non-maskable interrupt) when in
multiprocessor mode. This means that a failing device may not be
noticed, and that it is very difficult to troubleshoot a blue stop
screen problem.
 
RESOLUTION
==========
 
This is a hardware limitation. Contact Compaq Product Support for more
information.
 
Additional reference words: 3.10
KBCategory:
KBSubCategory: HRDWR STOPSCRN

=============================================================================

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Copyright Microsoft Corporation 1993.