HP nc4000 - Notebook PC Maintenance And Service Manual page 54

Troubleshooting
Flowchart 2.20—No Network/Modem Connection
No network
or modem
connection.
Network
or modem
jack active?
Y
Digital
line?
N
NIC/modem
configured
in OS?
Y
Disconnect all
power from
the notebook
and open.
Reseat
NIC/modem
(if applicable).
2–30
N
Replace jack
or have jack
activated.
Y
Connect
to nondigital
line.
N
Reload
drivers and
reconfigure.
OK?
N
Replace
NIC/modem
(if applicable).
OK?
N
Replace
system
board.
Maintenance and Service Guide
Y
Done
Y
Done