TITLE: 786B BIOS Family Processor Microcode Update

VERSION: 1.07 Rev. A
DESCRIPTION:
This SoftPaq contains a utility that can be used to install or upgrade the 
processor microcode update on the supported HP Compaq Business Desktop models 
listed with a 786B family BIOS. It updates the microcode for the F29, F33, and 
F34 steppings of the Pentium 4 processor.

This utility should generally be necessary only if the target machine is being 
serviced or upgraded with a different processor. If a microcode update needs to 
be installed, the BIOS will display a microcode error at startup. On rare 
occasions, supplemental microcode updates may be released which may be newer 
than the microcode update that shipped from the factory. This utility may also 
be used in these cases for field upgrades of the microcode. This utility 
installs a microcode update only, and does not change the system BIOS image or 
version. This utility will not replace the installed microcode update with an 
older revision.

The BIOS Family and Processor Stepping can be determined by pressing F10 on the 
target computer during system power on to run the Setup Utility, and then 
selecting File/System Information. This information can be saved into a text 
file on a diskette or on a USB flash media device by selecting File/Save to 
Diskette. In order for a USB flash media device to be recognized by the system, 
the device must be attached before the computer is turned on. 

PURPOSE: Routine
SOFTPAQ NUMBER: SP28162
SUPERSEDES: None
EFFECTIVE DATE: July 1, 2004
CATEGORY: BIOS
SSM SUPPORTED: No

PRODUCT TYPE(S):
Desktops

PRODUCT MODEL(S):
HP Compaq d330 desktop: All Models
HP Compaq d330 microtower: All Models
HP Compaq d330 slim tower: All Models
HP Compaq d338 microtower: All Models
HP Compaq d530 convertible minitower: All Models
HP Compaq d530 small form factor: All Models
HP Compaq d530 ultra-slim desktop: All Models
HP Compaq d538 convertible minitower: All Models
HP Compaq d538 small form factor: All Models
HP Compaq dc5000 microtower: All Models
HP Compaq dc5000 small form factor: All Models
HP Compaq dx2000 slim tower: All Models

OPERATING SYSTEM(S): 
Windows 2000
Windows NT 4.0
Windows XP Home Edition
Windows XP Professional

LANGUAGE(S): 
Global

ENHANCEMENTS: 
- Updates the microcode for the F29, F33, and F34 steppings of the Pentium 4 
processor.

PREREQUISITES: 
N/A

HOW TO USE: 
1. Download the SoftPaq .EXE file to a directory on your hard drive.

2. Execute the downloaded file and follow the on-screen instructions to build a 
bootable diskette that can be used to update the supported systems.

3. Restart the computer, allowing it to boot from the created diskette. Follow 
the on-screen instructions to update the processor microcode.



Copyright (c) 2004 Hewlett-Packard Development Company, L.P.