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72 Troubleshooting Your System
5
If possible, swap the interface cable with a working cable.
If the problem is resolved, replace the interface cable. See "Getting Help" on page 95.
6
Turn off 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. See "Getting Help" on page 95.
If the problem persists, see "Getting Help" on page 95.
Troubleshooting a NIC
Problem
• NIC cannot communicate with network.
Action
1
Run the appropriate online diagnostic test. See "Running the System Diagnostics" on page 85.
2
Check the appropriate indicator on the NIC connector. See "NIC Indicator Codes" on page 14.
• 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 documentation.
• Change the autonegotiation setting, if possible.
• Use another connector on the switch or hub.
If you are using a NIC card instead of an integrated NIC, see the documentation for the NIC card.
3
Ensure that the appropriate drivers are installed and the protocols are bound. See the NIC
documentation.
4
Enter the System Setup program and confirm that the NICs are enabled. See "Using the System Setup
Program" on page 23.
5
Ensure that the NICs, hubs, and switches on the network are all set to the same data transmission
speed. See the network equipment documentation.
6
Ensure that all network cables are of the proper type and do not exceed the maximum length. See
Network Cable Requirements in your
Getting Started Guide
.
Troubleshooting a Wet System
Problem
• Liquid spilled on the system.
• Excessive humidity.