Solving Network Problems
Some common causes and solutions for network problems are listed in the following table. These
guidelines do not discuss the process of debugging the network cabling.
Table D-11 Solving Network Problems
Wake-on-LAN feature is not functioning.
Cause
Solution
Wake-on-LAN is not enabled.
NOTE: Some NICs come with their own configuration that
allow for more detailed control and configuration of wake
features. Refer to the documentation included with the NIC for
more information.
Enable Wake-on-LAN.
1. Select Start > Control Panel.
2. Double-click Network Connections.
3. Double-click Local Area Connection.
4. Click Properties.
5. Click Configure.
6. Click the Power Management tab, then select the check
box to Allow this device to bring the computer out of
standby.
Network driver does not detect network controller.
Cause
Solution
Network controller is disabled. 1. Run Computer Setup and enable network controller.
2. Enable the network controller in the operating system via
Device Manager.
Incorrect network driver. Check the network controller documentation for the correct
driver or obtain the latest driver from the manufacturer’s Web
site.
Network status link light never flashes.
NOTE: The network status light is supposed to flash when there is network activity.
Cause
Solution
No active network is detected. Check cabling and network equipment for proper connection.
Network controller is not set up properly. Check for the device status within Windows, such as Device
Manager for driver load and the Network Connections applet
within Windows for link status.
Network controller is disabled. 1. Run Computer Setup and enable network controller.
2. Enable the network controller in the operating system via
Device Manager.
162 Appendix D Troubleshooting Without Diagnostics ENWW
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