176 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 70.6 Ensure that the NICs, hubs, and switches on the network are all set to thesame data transmission speed and duplex. See the documentation for eachnetwork device.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 203.Troubleshooting a Wet SystemCAUTION: Many repairs may only be done by a certified service technician.You should only perform troubleshooting and simple repairs as authorized inyour product documentation, or as directed by the online or telephone serviceand support team. Damage due to servicing that is not authorized by Dell is notcovered by your warranty. Read and follow the safety instructions that camewith the product.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 89.3 Disassemble components from the system. See "Installing SystemComponents" on page 85.• Hard drives• Optical drive• Memory risers• Cooling fan assembly• SD cards
