HP Compaq Presario,Presario V4000 Maintenance And Service Manual page 59

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