162 Troubleshooting Your System3 Check the appropriate indicator on the NIC connector. See "NIC IndicatorCodes" on page 23.• If the link indicator does not light, check all cable connections.• If the activity indicator does not light, the network driver files mightbe damaged or missing.Remove and reinstall the drivers if applicable. See the NIC'sdocumentation.• Change the auto negotiation setting, if possible.• Use another connector on the switch or hub.If you are using a NIC card instead of an integrated NIC, see thedocumentation for the NIC card.4 Ensure that the appropriate drivers are installed and the protocols arebound. See the NIC's documentation.5 Enter the System Setup program and confirm that the NIC ports areenabled. See "Integrated Devices Screen" on page 64.6 Ensure that the NICs, hubs, and switches on the network are all set to thesame data transmission speed. See the documentation for each networkdevice.7 Ensure that all network cables are of the proper type and do not exceed themaximum length.If all troubleshooting fails, see "Getting Help" on page 193.Troubleshooting a Wet SystemWARNING: Only trained service technicians are authorized to remove the systemcover and access any of the components inside the system. Before you begin thisprocedure, review the safety instructions that came with the system.1 Turn off the system and attached peripherals, and disconnect the systemfrom the electrical outlet.2 Open the system. See "Opening the System" on page 85.
