eMachine T3418 on board 10/100 ethernet. Went into control panel (win xp home), network connections, properties. Checked the box to: show icon in notification area when connected, and the network connection was lost. Device manager showed yellow exclaimation next to Device Unknown - nVidia network controller. Uninstalled the driver then reboot the computer. Windows halfway finds new hardware, saying the new found hardware may not work correctly if the machine is not rebooted. Reboot, and same thing. No network connection. Downloaded drivers from the web didn't help. Disabling the on board controller and adding a pci Realtek 10/100 card didn't work. Anyone else seen this strange behavior?