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Troubleshooting Your System 133
2
Remove power from the system and any USB devices.
3
Disconnect the USB devices, and connect the malfunctioning device to
the other USB connector.
4
Turn on the system and the reconnected device.
If the problem is resolved, the USB connector might be defective. See
"Getting Help" on page 165.
5
If possible, swap the interface cable with a known working cable.
If the problem is resolved, replace the interface cable.
If the problem persists, see "Getting Help" on page 165.
6
Remove power from the system and the USB device, and swap the device
with a comparable device.
7
Turn on the system and the USB device.
If the problem is resolved, replace the USB device.
If the problem persists, see "Getting Help" on page 165.
Troubleshooting a NIC
Problem
• NIC cannot communicate with network.
Action
1
Run the appropriate online diagnostic test. See "Running the System
Diagnostics" on page 149.
2
Check the appropriate indicator on the NIC connector. See "NIC
Indications" on page 22.
• If the link indicator does not light, check all cable connections.
• If the activity indicator does not light, the network driver files might
be damaged or missing.
Remove and reinstall the drivers if applicable. See the NIC's
documentation.
• Change the autonegotiation setting, if possible.