"Unidentified network" causing no internet access through ethernet connection

[craigchapman775]

I just had AT&T fiber installed and my desktop cannot connect to the internet through ethernet. I have a wireless card that connects fine but when I plug the ethernet connection into the wall it is listed as "Unidentified Network" and I don't have internet access. I have Windows 7. The internet worked just fine last week until I moved. I don't know what's going on.

 

[kanewolf]

You moved. Just because there is a network jack in the new location, there is no reason to believe it behaves exactly like the old location. You need to understand where that wall port goes. Unless it connects to your router, it won't work.

 

[craigchapman775]

You moved. Just because there is a network jack in the new location, there is no reason to believe it behaves exactly like the old location. You need to understand where that wall port goes. Unless it connects to your router, it won't work.

The wall port works fine. Just tested it with an ethernet connection to my xbox and I'm getting a connection. Also tested it with a switch and I'm getting the flashing green lights.

 

[kanewolf]

OK, that would have been useful info in the first post. Next obvious idea is to verfiy that your PC is set to DHCP and not a static IP that is in a different subnet from your router.

 

[craigchapman775]

OK, that would have been useful info in the first post. Next obvious idea is to verfiy that your PC is set to DHCP and not a static IP that is in a different subnet from your router.

I've checked IPv4 and it is set up to automatically obtain an IP. Nothing static is in the blanks

 

[kanewolf]

Then I think you will have to run ipconifg /all in a cmd.exe window. See if you ARE getting an IP address from the DHCP server.

 

[craigchapman775]

Then I think you will have to run ipconifg /all in a cmd.exe window. See if you ARE getting an IP address from the DHCP server.

It won't let me copy and paste but here's a screenshot of the results

https://imgur.com/a/eOLvzkE

 

[kanewolf]

OK, well the RealTek device shown it your wired ethernet. Notice how it has a 169.254 IP address. That says that your PC failed to get an IP from the DHCP server. Is this screen shot taken with the wired connected? Since you said you tried a switch from the wall, what happens if you plug the PC into the switch?

 

[craigchapman775]

OK, well the RealTek device shown it your wired ethernet. Notice how it has a 169.254 IP address. That says that your PC failed to get an IP from the DHCP server. Is this screen shot taken with the wired connected? Since you said you tried a switch from the wall, what happens if you plug the PC into the switch?

Yes this is with the wired connected. Using the switch did not work. Would you like me to connect it to the switch then post the ipconfig?

 

[kanewolf]

This may sound strange, but what if you disable the WIFI on your router for a test. This is just in case the WIFI being connected is confusing windows. If you turn off the WIFI at the router (should be easy) the WIFI device in the PC won't connect. That may force the wired to connect. It is possible it is a timing thing. They both try to connect and the WIFI wins. We can eliminate that by removing the WIFI signal. If you don't want to go that route, you could just "forget" the WIFI connection in the "manage connections" tool on the PC. That would be the equivalent.

 

[craigchapman775]

I turned off the WiFi to the computer and it still doesn't connect through the wired connection. I logged into my router and there is a DHCP screen. Does this information help you?

https://imgur.com/a/K19BRwf

 

[kanewolf]

I think you are going to have to try a direct connection (short cable) to the router and not go through the wall plug. We have to determine if the wire might be at fault. If you have the link speed on your wired connection set to 1Gb rather than automatic, it could be the wire that is the problem.

 

[craigchapman775]

I think you are going to have to try a direct connection (short cable) to the router and not go through the wall plug. We have to determine if the wire might be at fault. If you have the link speed on your wired connection set to 1Gb rather than automatic, it could be the wire that is the problem.

Just plugged it directly to the router and getting the same results. Unidentified network with no internet connection.

 

[kanewolf]

OK, so it is the PC that is the issue. A motherboard ethernet port is unlikely to be damaged by moving. But DHCP is failing for some reason. Adding a switch didn't fix it so it is unlikely an autonegotiation problem. I don't have an obvious next step. Driver type things shouldn't have changed because of moving.
You could try creating a static IP on the PC with the DNS and gateway manually specified.

 

[craigchapman775]

OK, so it is the PC that is the issue. A motherboard ethernet port is unlikely to be damaged by moving. But DHCP is failing for some reason. Adding a switch didn't fix it so it is unlikely an autonegotiation problem. I don't have an obvious next step. Driver type things shouldn't have changed because of moving.
You could try creating a static IP on the PC with the DNS and gateway manually specified.

So instead of letting it automatically get an IP just enter them in? Which values do I enter?

 

[kanewolf]

You need to reserve some address space from your router. On the page that has the DHCP settings you want to set a min and max address so that you can set the static IP address OUTSIDE the DHCP range.

Your router is 192.168.1.1 according to your screen shots.

You would set the PC IP address to something like 192.168.1.250. You set the default gateway and the DNS to 192.168.1.1. Set the netmask to 255.255.255.0

 

[craigchapman775]

You need to reserve some address space from your router. On the page that has the DHCP settings you want to set a min and max address so that you can set the static IP address OUTSIDE the DHCP range.

Your router is 192.168.1.1 according to your screen shots.

You would set the PC IP address to something like 192.168.1.250. You set the default gateway and the DNS to 192.168.1.1. Set the netmask to 255.255.255.0

Unfortunately this didn't work. Do you think I need to purchase a new computer?

 

[reedo_43]

dns has to be 192.168.1.254 not 1.1

 

[reedo_43]

If that doesn't work. Set the nic back to dhcp and disable it and re-enable it. That sometimes works. Aslo you can right click on the icon and trouble shoot it. Good luck!

 

[kanewolf]

dns has to be 192.168.1.254 not 1.1

I should have looked closer. My error on that one. It is I saw the DHCP screen and used that. I should have looked at the ipconfig screen also ...

 

[reedo_43]

And I was ready for a big scolding!

 

[craigchapman775]

dns has to be 192.168.1.254 not 1.1

Unfortunately that also did not work.

 

[reedo_43]

Disable your wifi. Go to a command prompt and type ping 127.0.0.1 and post your results.

 

[craigchapman775]

Disable your wifi. Go to a command prompt and type ping 127.0.0.1 and post your results.

Disable my wifi connection on the desktop or disable the wifi on the router? If it's the latter I can't do that.

 

[reedo_43]

Your desktop