HP EliteOne 870 Maintenance and Service Guide - Page 67

Solving network problems, Network driver does not detect network controller

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Cause Memory is installed incorrectly or is bad. Solution IMPORTANT: To avoid damage to the DIMMs or the system board, you must unplug the computer power cord before attempting to reseat, install, or remove a DIMM module. 1. Reseat DIMMs. Turn on the system. 2. Replace DIMMs one at a time to isolate the faulty module. NOTE: DIMM1 or XMM1 must always be installed. DIMM1 must be installed before DIMM3. 3. Replace third-party memory with HP memory. 4. Replace the system board. Solving network problems Some common causes and solutions for network problems are listed in these tables. The guidelines do not discuss the process of debugging the network cabling. Network driver does not detect network controller Use this information to troubleshoot the computer. Cause Network controller is disabled. Incorrect network driver. Solution 1. Run Computer Setup and enable network controller. 2. Enable the network controller in the operating system using Device Manager. To access Device Manager in Windows, type device manager in the taskbar search box, and then select Device Manager from the list of applications. Check the network controller documentation for the correct driver or obtain the latest driver from the manufacturer's website. Network status link light never blinks Use this information to troubleshoot the computer. NOTE: The network status light is supposed to blink when there is network activity. Cause No active network is detected. Network controller is not set up properly. 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. To access Device Manager in Windows, type device manager in the taskbar search box, and then select Device Manager from the list of applications. 60 Chapter 5 Troubleshooting without diagnostics

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Solution
Cause
IMPORTANT:
To avoid damage to the DIMMs or the system board, you must
unplug the computer power cord before attempting to reseat, install, or
remove a DIMM module.
1.
Reseat DIMMs. Turn on the system.
2.
Replace DIMMs one at a time to isolate the faulty module.
NOTE:
DIMM1 or XMM1 must always be installed. DIMM1 must be
installed before DIMM3.
3.
Replace third-party memory with HP memory.
4.
Replace the system board.
Memory is installed incorrectly or is bad.
Solving network problems
Some common causes and solutions for network problems are listed in these tables. The guidelines do not
discuss the process of debugging the network cabling.
Network driver does not detect network controller
Use this information to troubleshoot the computer.
Solution
Cause
1.
Run Computer Setup and enable network controller.
2.
Enable the network controller in the operating system using Device
Manager.
To access Device Manager in Windows, type
device manager
in the
taskbar search box, and then select
Device Manager
from the list of
applications.
Network controller is disabled.
Check the network controller documentation for the correct driver or obtain
the latest driver from the manufacturer’s website.
Incorrect network driver.
Network status link light never blinks
Use this information to troubleshoot the computer.
NOTE:
The network status light is supposed to blink when there is network activity.
Solution
Cause
Check cabling and network equipment for proper connection.
No active network is detected.
Check for the device status within Windows, such as Device Manager for
driver load and the Network Connections applet within Windows for link
status.
To access Device Manager in Windows, type
device manager
in the
taskbar search box, and then select
Device Manager
from the list of
applications.
Network controller is not set up properly.
60
Chapter 5
Troubleshooting without diagnostics