HP ProDesk 400 G7 SFF - Diagnostics Passes, but the Computer Does Not Communicate with the Network; Network Controller Stopped Working When an Expansion Board was Added to the Computer; Network Controller Stops Working Without Apparent Cause; Cannot Connect to Network Server When Attempting Remote System Installation

Cause Solution
The cable is not securely connected. 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 attached to the incorrect connector. Be sure that the cable is attached to the correct connector.
There is a problem with the cable or a device at the other end of the
cable.
Be sure that the cable and device at the other end are operating
correctly.
The network controller is defective. Contact an authorized service provider.
Diagnostics passes, but the computer does not communicate with the network
Use this information to troubleshoot the computer.
Cause Solution
Network drivers are not loaded, or driver parameters do not match
current conguration.
Be sure that the network drivers are loaded and that the driver
parameters match the conguration of the network controller. Be
sure that the correct network client and protocol is installed.
The network controller is not congured for this computer. Select the Network and Sharing Center icon in the Control Panel,
and congure the network controller. To access Control Panel in
Windows 10, type control panel in the taskbar search box,
and then select Control Panel from the list of applications.
Network controller stopped working when an expansion board was added to the
computer
Use this information to troubleshoot the computer.
Cause Solution
The network controller requires drivers. Verify that the drivers were not accidentally deleted when the
drivers for a new expansion board were installed.
Network controller stops working without apparent cause
Use this information to troubleshoot the computer.
Cause Solution
The cable is not securely connected. 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 network controller is defective. Contact an authorized service provider.
Cannot connect to network server when attempting remote system installation
Use this information to troubleshoot the computer.
ENWW Solving network problems 67