Reinstalling the Motherboard

Reassembly Procedure

1.Insert the I/O connectors through their openings in the bottom case, then lower the motherboard into place.

2.Make sure the PC card eject button fits into its slot in the bottom case.

3.Make sure the alignment posts in the bottom case—near the CPU module and PC card guide—fit through the corresponding openings in the motherboard.

When Installing a New Motherboard

After installing a new motherboard, you must electronically transfer to it the serial number and service ID from the previous motherboard.

1.Exit Windows and boot to a DOS prompt.

2.Run ESN.EXE from the same source you used when saving the serial number and service ID from the previous motherboard:

•On a factory software installation, change to the \hp\drivers\hputils directory and type esn at the prompt.

•Otherwise, copy \hp\drivers\hputils\ESN.EXE from the Recovery CD, then run it on the notebook.

3.Install the serial number and service ID.

•If you are prompted for the serial number, type the serial number shown on the bottom of the case.

•If a serial number has already been stored, you must call an HP support center to change it (see page vi).

2-34 Removal and Replacement

HP Pavilion zt1100/xz100 Omnibook xt1000