Network controller stopped working when an expansion board was added

Action:

1. Be sure no loose connections exist.
2. Be sure the server and operating system support the controller. Refer to the server and operating system documentation.
3. Be sure the new expansion board has not changed the server configuration, requiring reinstallation of the network driver.
   1. Uninstall the network controller driver for the malfunctioning controller in the operating system.
   2. Restart the server and run RBSU. Be sure the server recognizes the controller and that resources are available for the controller.
   3. Restart the server, and then reinstall the network driver.
4. Refer to the operating system documentation to be sure the correct drivers are installed.
5. Refer to the operating system documentation to be sure that the driver parameters match the configuration of the network controller.