[SOLVED] Can't access internet anymore, wired straight to Arris modem

[SFAwesomesauce]

So my PC connected perfectly fine until yesterday. Now it says I'm connected, but I can only access Google, YouTube and Facebook. Running Diagnose gives me the super common "Settings are configured correctly but the DNS is not responding" error.

Heads up, though, I have gone through every post that my search had thrown up for me, and I have tried every single common solution to no avail.
Release, renew, DNS flush and register, netsh commands, Google's DNS servers, all my stuff's set to auto. Called my ISP, not their problem they said. I've even done the windows reset. Nada.
Now the messed up part? Borrowed a router to test it out. When I'm hard wired into the router, I can get on just fine, though my download speed is like, 1/4 of what I got wired to the modem.

So long story short, PC can connect to the DNS through a router, but no longer can with being hard wired to the modem.

And I don't really want to have to go out and buy a router, considering I never needed one prior.

Any idea what in the hell is going on?

 

[Dave8671]

I need to confirm that the issue it not wireless adapter correct? Lets see of this below shares light. Open a terminal
If you do know how press windows key + R than type in CMD.

Now once the terminal copy and paste the command hit enter. Look for DNS, IP information. 192.168.0.0 example.

Ipconfig /all

I suggest in the future post your issue brfore a reset cause a windows reset thats a last resort.

 

[SFAwesomesauce]

Well, if it helps any, I do not have a wireless adapter. Ethernet only, lol.


Ethernet adapter Ethernet:

Connection-specific DNS Suffix . : cgocable.net
Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller
Physical Address. . . . . . . . . : 40-8D-5C-CA-1E-A1
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2001:1970:4000:44:18d4:4a36:765:717(Preferred)
Lease Obtained. . . . . . . . . . : Thursday, July 4, 2019 9:50:52 PM
Lease Expires . . . . . . . . . . : Friday, July 5, 2019 9:50:53 PM
Link-local IPv6 Address . . . . . : fe80::9454:1ada:4583:61c5%13(Preferred)
IPv4 Address. . . . . . . . . . . : 67.193.84.0(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.248.0
Lease Obtained. . . . . . . . . . : Thursday, July 4, 2019 9:50:52 PM
Lease Expires . . . . . . . . . . : Thursday, July 4, 2019 10:50:52 PM
Default Gateway . . . . . . . . . : fe80::10%13
67.193.80.1
DHCP Server . . . . . . . . . . . : 24.226.22.71
DHCPv6 IAID . . . . . . . . . . . : 222334300
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-24-8C-FD-CC-40-8D-5C-CA-1E-A1
DNS Servers . . . . . . . . . . . : 2001:1970:c06e:c0::93
2001:1970:c0c0:6ec0::193
24.226.1.93
24.226.10.193
NetBIOS over Tcpip. . . . . . . . : Enabled
Connection-specific DNS Suffix Search List :
cgocable.net

 

[Dave8671]

Well I can see that the DNS has a strange value fe80::10%13 thats odd. I have a theory and maybe a solution I did say maybe 😉.

Here is what i would try

1. - disable the IPv6 Address than reboot the system.

2. - change the DNS address to open DNS.


OpenDNS.

Once you read this uncheck the IPv6 to disable it. than change the DNS to what the link dns addresses. Than flush the dns cache by opening a terminal and copy and paste.

ipconfig /flushdns

 

[volstead]

I know you said you'd done a reset. Is it too late to revert to a restore point? Maybe that will get you back to where your connection was still working.

 

[SFAwesomesauce]

I'll check when I get home from work, but yeah I should have a restore point set

 

[SFAwesomesauce]

Well I can see that the DNS has a strange value fe80::10%13 thats odd. I have a theory and maybe a solution I did say maybe 😉.

Here is what i would try

1. - disable the IPv6 Address than reboot the system.

2. - change the DNS address to open DNS.


OpenDNS.

Once you read this uncheck the IPv6 to disable it. than change the DNS to what the link dns addresses. Than flush the dns cache by opening a terminal and copy and paste.

ipconfig /flushdns

That did it, my good friend! I've tried each of those separately, but I never thought to try them all together.

 

[volstead]

Good news! Glad you got your system working again.

 

[Dave8671]

Fantastic, In order for IPv6 addressing to work the ISP has to provide IPv6 connectivity. I think in your case they do not. The fact that they said it was your problem really bugs me. Its not a good company if they do not provide help for paying customers. If you recheck your ipconfig /all it will look normal something like below.

DNS Servers . . . . . . . . . . . : 8.8.8.8
8.8.4.4
209.55.27.14