HP dx2290 - Microtower PC Service & Reference Manual page 100

Table D-12 Solving Network Problems (continued)
Network status link light never flashes.
NOTE: The network status light is supposed to flash when there is network activity.
Cause
No active network is detected.
Network controller is not set up properly.
Network controller is disabled.
Network driver is not properly loaded.
System cannot autosense the network.
Diagnostics reports a failure.
Cause
The cable is not securely connected.
The cable is attached to the incorrect connector.
There is a problem with the cable or a device at the other end
of the cable.
The network controller is defective.
Diagnostics passes, but the computer does not communicate with the network.
Cause
Network drivers are not loaded, or driver parameters do not
match current configuration.
The network controller is not configured for this computer.
Network controller stopped working when an expansion board was added to the computer.
Cause
The network controller requires drivers.
92 Appendix D Troubleshooting Without Diagnostics
Solution
Check cabling and network equipment for proper connection.
Check for the device status within Windows, such as Device
Manager for driver load and the Network Connections applet
within Windows for link status.
1. Run Computer Setup and enable network controller.
2. Enable the network controller in the operating system via
Device Manager.
Reinstall network drivers. See the Network & Internet
Communications Guide on the Documentation and
Diagnostics CD.
Disable auto-sensing capabilities and force the system into the
correct operating mode. See the Network & Internet
Communications Guide on the Documentation and
Diagnostics CD.
Solution
Ensure that the cable is securely attached to the network
connector and that the other end of the cable is securely
attached to the correct device.
Ensure that the cable is attached to the correct connector.
Ensure that the cable and device at the other end are operating
correctly.
Replace the network controller.
Solution
Make sure the network drivers are loaded and that the driver
parameters match the configuration of the network controller.
Make sure the correct network client and protocol is installed.
Select the Network icon in the Control Panel and configure
the network controller.
Solution
Verify that the drivers were not accidentally deleted when the
drivers for a new expansion board were installed.