150 Troubleshooting Your System• 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 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 177.Troubleshooting a Wet SystemCAUTION: Many repairs may only be done by a certified service technician. Youshould only perform troubleshooting and simple repairs as authorized in yourproduct documentation, or as directed by the online or telephone service andsupport team. Damage due to servicing that is not authorized by Dell is not coveredby your warranty. Read and follow the safety instructions that came with theproduct.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 82.3 Remove the following components from the system. See "InstallingSystem Components" on page 79.• Cooling shroud• Hard drives• Vflash SD cards• USB memory keys• NIC hardware key
