Well I tried the windows 10 KB4493509 update again with resetting network device and that did not fix the Ethernet connection. Then I uninstalled the windows 10 KB4493509 update and that did not restore the Ethernet connection. I was thinking it was a OS problem, so I did a clean install of window 10 and that did not resolve the internet Ethernet connection problem. Now I'm thinking it is a Ethernet network controller problem, so I ordered a new Intel EXPI9301CTBLK 10/100/1000Mbps PCI-Express Network Adapter. Hopefully that will fix the PC?