No software can access my network adapter or Ethernet controller
No software can access my network adapter or Ethernet controller
i'm working with an older AM2 socket Dell Optiplex 740 and it's having a problem where the network adapter isn't visible to the OS. I've tried using software tools on Windows 8.1 and Linux Ubuntu 18.04, but the best results came from Windows, possibly showing it as "Broadcom NetXtreme 57xx Gigabit Controller."
Did you verify the connection lights on the device with the Ethernet cable? If they're off, look into the system's BIOS settings to ensure the LAN card is activated.
My investigation shows the system relies on a Broadcom BCM5754 controller. I located a troubleshooting discussion on Ubuntu forums and some Dell driver resources... https://www.google.ca/search?q=Broadcom+...e&ie=UTF-8 Consider trying those drivers.