HP TC4400 - Manual (Page 53)

Troubleshooting
Maintenance and Service Guide 2–25
Flowchart 2.19—Nonfunctioning Pointing
Device
Y
N
OK?
Pointing device
not operating
properly.
External
device
works?
Replace
system
board.
Replace
system
board.
Connect computer
to good external
pointing device.
Reseat internal
pointing device
connector
(if applicable).
Replace internal
pointing device
or cable.
OK?
Y
N
Y
N
Done Done