3Check the appropriate indicator on the NIC connector. See "NIC Indicator Codes" on page 21.
•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.
•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.
4Ensure that the appropriate drivers are installed and the protocols are bound. See the NIC's documentation.
5Enter the System Setup program and confirm that the NIC ports are enabled. See "Integrated Devices Screen" on page 58.
6Ensure that the NICs, hubs, and switches on the network are all set to the same data transmission speed and duplex. See the documentation for each network device.
7Ensure that all network cables are of the proper type and do not exceed the maximum length.
If all troubleshooting fails, see "Getting Help" on page 157.
Troubleshooting a Wet System
CAUTION: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.
1Turn off the system and attached peripherals, and disconnect the system from the electrical outlet.
2Open the system. See "Opening the System" on page 79.
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Troubleshooting Your System
