Dell PowerEdge 1850 - Manual (Page 29)

4. Turn off the system and the serial device, and swap the device with a comparable device.
5. Turn on the system and the serial device.
If the problem is resolved, replace the serial device. See " Getting Help ."
If the problem persists, see " Getting Help ."
Troubleshooting a USB Device
Problem
l System message indicates a problem with a USB device.
l Device connected to a USB port is not operating properly.
Action
1. Enter the System Setup program, and ensure that the USB ports are enabled. See "Using the System Setup Program" in your User's Guide.
2. Turn off the system and any USB devices.
3. Disconnect the USB devices, and connect the malfunctioning device to the other USB connector.
4. Turn on the system and the reconnected device.
If the problem is resolved, the USB connector might be defective. See " Getting Help ."
5. If possible, swap the interface cable with a working cable.
If the problem is resolved, replace the interface cable. See " Getting Help ."
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 ."
If the problem persists, see " Getting Help ."
Troubleshooting a NIC
Problem
l NIC cannot communicate with network.
Action
1. Run the appropriate online diagnostic test. See " Using Server Administrator Diagnostics " in "Running System Diagnostics."
2. Check the appropriate indicator on the NIC connector. See " NIC Indicator Codes " in "Indicators, Messages, and Codes."
l If the link indicator does not light, check all cable connections.
l 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.
l Change the autonegotiation setting, if possible.
l 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.