Article ID: 936357
Last Review: June 22, 2007
Revision: 1.0

SUMMARY
A microcode reliability update is available that improves the reliability of systems that use Intel processors. This article describes how to download this update.

Applies to:

• Windows Vista Home Basic
• Windows Vista Home Premium
• Windows Vista Ultimate
• Windows Vista Business
• Windows Vista Enterprise
• Windows Vista Starter
• Windows Vista Home Basic 64-bit Edition
• Windows Vista Home Premium 64-bit Edition
• Windows Vista Ultimate 64-bit Edition
• Windows Vista Business 64-bit Edition
• Windows Vista Enterprise 64-bit Edition
• Microsoft Windows Server 2003, Standard Edition (32-bit x86)
• Microsoft Windows Server 2003, Enterprise Edition (32-bit x86)
• Microsoft Windows Server 2003, Datacenter Edition (32-bit x86)
• Microsoft Windows Server 2003, Web Edition
• Microsoft Windows Server 2003, Standard x64 Edition
• Microsoft Windows Server 2003, Enterprise x64 Edition
• Microsoft Windows Server 2003, Datacenter x64 Edition
• Microsoft Windows XP Home Edition
• Microsoft Windows XP Professional

Added KB936357 Hotfix. Replaces KB885626 Hotfix

KB885626

Your computer stops responding when you restart to complete the installation of Windows XP Service Pack 2 or Windows XP Tablet PC Edition 2005

SUMMARY
This article describes how to resolve an issue where your computer stops responding (hangs) when you restart to complete the installation of Microsoft Windows XP Service Pack 2 or Windows XP Tablet PC Edition 2005. This issue occurs on a limited number of systems that use a version of basic input/output system (BIOS) that does not have production support for Intel Pentium 4 and Intel Celeron D processors based on the Prescott C-0 stepping.

CAUSE
This issue may occur if the following conditions are true:
• Your computer uses an Intel Pentium 4 or Intel Celeron D processor that is based on Prescott C-0 processor stepping.
• Your computer has a BIOS version that is out of specification.

Note A BIOS version that is out of specification does not provide support for the processor that is installed on your computer.

MORE INFORMATION
Windows XP can provide a processor stepping-specific update that will run independently of the BIOS to provide support for the installed processor. If an operating system cannot load the Intel-provided production support update for a processor, you may experience stop errors or startup failures. In this case, the BIOS does not provide the required production support, and the Intel-provided production support update that is provided in Windows XP causes the system to stop responding.