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.