Troubleshooting Without Diagnostics

Solving Network Problems

These guidelines do not discuss the process of debugging the network cabling.

Solving Network Problems

Problem

Cause

Solution

 

 

 

Wake-on-LAN feature is

Wake-on-LAN is not

Use the Network Connections

not functioning.

enabled.

application in Control Panel to

 

 

enable Wake-on-LAN.

 

 

 

 

Network driver does

Network controller is

1.

Run Computer Setup and

not detect network

disabled.

 

enable network controller.

controller.

 

2.

Enable the network controller in

 

 

 

 

 

the operating system via the

 

 

 

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 does not turn on or it never flashes.

✎The network status light should flash when there is network activity.

No active network is

Check cabling and network

detected.

equipment for proper connection.

 

 

Network controller is not

Use the Network control application

set up properly.

to verify that the device is working

 

properly.

 

Network controller is

1. Run Computer Setup and

 

disabled.

enable network controller.

 

 

2. Enable the network controller in

 

 

the operating system via Device

 

 

Manager.

 

 

 

 

Network driver is not

Reinstall network drivers.

 

properly loaded.

 

 

 

 

 

System cannot autosense

Disable auto-sensing capabilities

 

the network.

and force the system into the correct

 

 

operating mode.

 

 

 

Diagnostics reports a

The cable is not securely

Ensure that both ends of the data

failure.

connected.

cable are securely connected.

 

 

 

 

The cable is attached to

Ensure that the cable is attached to

 

the incorrect connector.

the correct connector.

 

 

 

 

There is a problem with

Ensure that the cable and device at

 

the cable or a device at

the other end are operating

 

the other end of the cable.

correctly.

 

 

 

 

Network controller

Under the Computer Setup

 

interrupt is shared with

Advanced menu, change the

 

an expansion board.

resource settings for the board.

 

 

 

 

The network controller

Replace the system board (NIC is

 

is defective.

integral to the system board).

 

 

 

D–20

390742-002

Service Reference Guide, dc7600