HP Pro SFF 400 G9 - Network Driver Does Not Detect Network Controller; Network Status Link Light Never Blinks; Diagnostics Reports a Failure

Network driver does not detect network controller
Use this information to troubleshoot the computer.
SolutionCause
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.
SolutionCause
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.
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.
Reinstall network drivers.Network driver is not properly loaded.
Disable autosensing capabilities, and force the system into the correct
operating mode.
System cannot autosense the network.
Diagnostics reports a failure
Use this information to troubleshoot the computer.
Solution
Cause
Be sure 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.
The cable is not securely connected.
Be sure that the cable is attached to the correct connector.The cable is attached to the incorrect
connector.
Be sure that the cable and device at the other end are operating
correctly.
There is a problem with the cable or a device
at the other end of the cable.
Network driver does not detect network controller 61