HP ProOne 490 G3 Maintenance And Service Manual page 64

Table 6-2 Solving network problems (continued)
Diagnostics passes, but the computer does not communicate with the network.
Cause
Network controller stopped working when an expansion board was added to the computer.
Cause
The network controller requires drivers.
Network controller stops working without apparent cause.
Cause
The files containing the network drivers are corrupted.
The cable is not securely connected.
The network controller is defective.
New network card will not boot.
Cause
New network card may be defective or may not meet industry-
standard specifications.
Cannot connect to network server when attempting Remote System Installation.
Cause
The network controller is not configured properly.
56 Chapter 6 Troubleshooting without diagnostics
Solution
To access Control Panel in Windows 7, click Start, and then select
Control Panel.
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.
Solution
Verify that the drivers were not accidentally deleted when
the drivers for a new expansion board were installed.
Solution
Reinstall the network drivers using the Recovery Disc Set in
Windows 7 or Windows recovery tools in Windows 10.
If necessary, download the softpaq from the web (from a different
computer).
Ensure 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.
Contact an authorized service provider.
Solution
Install a working, industry-standard NIC, or change the boot
sequence to boot from another source.
Solution
Verify Network Connectivity, that a DHCP Server is present, and
that the Remote System Installation Server contains the NIC
drivers for your NIC.