HP XA zz= language, x = major revision, yy= minor revision, H = HP Professional PC, 3Insert the DOS-bootablediskette

2 System Board

Devices on the ISA Bus

BIOS Update Crisis Recovery Procedure

The following diagrams show the position of the system board switches on the desktop and minitower models.

If, for example, during a BIOS update process, the procedure is interrupted by a power failure, and the system does not start, then you can still recover the situation of a destroyed system BIOS. However, it should be noted that during the recovery procedure, there is no image on the screen, nor access to the keyboard or mouse (only “vital” devices that are required to boot on the floppy are initialized). Follow these steps to recover the BIOS:

1Ensure that you have created a DOS-bootable diskette. This floppy dis- kette contains all the recovery and system BIOS programming software (phlash.exe, platform.bin and hblxxxyy.Ful). Include the flash command in the autoexec.bat, for example: phlash /mode=3 HC1xyyzz.Ful

H = HP Professional PCC = Kayak XA (Pentium II models) 1 = Kayak familyx = major revisionyy= minor revisionzz= language2Turn off the computer. Set Switch 9 to the Closed position.3Insert the DOS-bootable diskette.

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