Removing or Repairing the BIOS IC

(HP Authorized Service Providers Only)

For the OmniBook 4150 Series, the BIOS IC is soldered to the motherboard and is not replaceable:

∙If the OmniBook 4150 BIOS IC is defective, the motherboard must be replaced.

∙However, if the OmniBook 4150 BIOS IC might only be corrupted, you can repair the BIOS from a Crisis Recovery floppy—see the information below.

Note

A replacement BIOS IC contains only enough basic programming to boot the OmniBook. After installing the IC, you must reprogram it. Hewlett-Packard prefers that you program the IC with the latest BIOS. You can download it from the OmniBook website (see page vi)—follow the directions provided.

Required Equipment

∙Small Phillips screwdriver.

∙IC (PLCC) removal tool (similar to OK Industries EX-5).

Removal Procedure

Caution

Remove all power before removing or installing the BIOS IC. Otherwise, the IC could be damaged.

1.Unplug the ac adapter, if present, and remove the battery.

2.On the bottom of the unit, remove the two screws from the RAM/BIOS cover and remove the cover.

3.Use an IC removal tool to remove the BIOS IC from its socket.

IC removal tool

Figure 2-15. Removing the BIOS IC

HP OmniBook 4100/4150

Removal and Replacement 2-29