HP dc7800 tower manual 12Solving Network Problems

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 2-12Solving Network Problems

Wake-on-LAN feature is not functioning.

Cause	Solution
Wake-on-LAN is not enabled.	To enable Wake-on-LAN in Windows XP:
	1.	Select Start > Control Panel.
	2.	Double-clickNetwork Connections.
	3.	Double-clickLocal 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.
	To enable Wake-on-LAN in Windows Vista:
	1.	Select Start > Control Panel.
	2.	Under Network and Internet, select View network
		status and tasks.
	3.	In the Tasks list, select Manage network connections.
	4.	Double-clickLocal Area Connection.
	5.	Click the Properties button.
	6.	Click the Configure button.
	7.	Click the Power Management tab, then select the check
		box to Allow this device to wake the computer.
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.

34 Chapter 2 Troubleshooting Without Diagnostics ENWW