Inconsistent Ethernet Connection (Invalid IP Configuration?)

[Fortin Bras]

There doesn't seem to be any rhyme or reason to when my PC's internet works. It will be running fine for a few hours, then the internet will suddenly cut out (with a yellow triangle appearing over the connection in the dashboard, with the message "unidentified network"). I can take the PC's ethernet cord and immediately plug it into my laptop to see that the internet seems to be working fine. Additionally, the person who gave me this PC said it was working fine with the internet at their office. So it seems to be the settings on this PC (with respect to my home internet) that must be leading to this inconsistency.

I've spent a lot of time trying different solutions suggested in other Tom's Hardware threads. Here are a few I have tried so far:
- Using a USB / Ethernet dongle rather than plugging into the NIC
- Unplugging the computer, modem, and router, waiting 30 minutes, and then plugging them back in.
- Disabling some IPv6 features
- Disabling DHCP and manually entering the IPv4 Address/Subnet Mask/Default Gateway/DNS Servers

With each of the above solutions, the internet has worked some of the time, and not worked some of the time. When I try to troubleshoot the issue, I get various errors depending on the settings, most notably "The default gateway is not available" and "'Local Area Connection 2' doesn't have a valid IP configuration." These were the errors I Googled when trying to solve this problem, but I can't tell if the 'fixes' had any effect at all. I would very much like for this problem to go away permanently, but I'm at a complete loss for how to do it.

Hardware Information:

Spoiler

Operating System: Windows 10 Pro 64-bit
CPU: Intel Core i7 Extreme 980X @ 3.33GHz
RAM: 12.0GB Triple-Channel DDR3 @ 540MHz
Motherboard: Intel Corporation DX58SO (J1PR)

Router: D-Link 5 Port Gigabit Unmanaged Metal Desktop Switch (DGS-105)
Router Thingy: Powerline 1-port Gigabit Ethernet Adapter (PLE500) (I didn't set up the internet, so I'm not sure what else to call it. It turns a power outlet into an ethernet thing.)

ipconfig /all:

Spoiler

C:\Users\Brian>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : Coyote
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) 82567LM-2 Gigabit Network Connection
Physical Address. . . . . . . . . : E0-69-95-DE-14-BC
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 192.168.0.125(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Monday, August 10, 2015 1:46:14 AM
Lease Expires . . . . . . . . . . : Monday, August 17, 2015 1:48:29 AM
Default Gateway . . . . . . . . . : 192.168.0.1
DHCP Server . . . . . . . . . . . : 192.168.0.1
DNS Servers . . . . . . . . . . . : 192.168.0.1
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter isatap.{624EB7FF-7228-4CC4-97A4-D423C12FBA21}:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft ISATAP Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Teredo Tunneling Pseudo-Interface:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Teredo Tunneling Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2001:0:9d38:90d7:203b:2c33:b38e:8bf3(Preferred)
Link-local IPv6 Address . . . . . : fe80::203b:2c33:b38e:8bf3%3(Preferred)
Default Gateway . . . . . . . . . : ::
DHCPv6 IAID . . . . . . . . . . . : 201326592
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-17-5F-DF-E3-E0-69-95-DE-14-BC
NetBIOS over Tcpip. . . . . . . . : Disabled

I'm not the most tech-savvy of users, so pretty much any input at all is welcome!

 

[gbb0330]

There doesn't seem to be any rhyme or reason to when my PC's internet works. It will be running fine for a few hours, then the internet will suddenly cut out (with a yellow triangle appearing over the connection in the dashboard, with the message "unidentified network"). I can take the PC's ethernet cord and immediately plug it into my laptop to see that the internet seems to be working fine. Additionally, the person who gave me this PC said it was working fine with the internet at their office. So it seems to be the settings on this PC (with respect to my home internet) that must be leading to this inconsistency.

I've spent a lot of time trying different solutions suggested in other Tom's Hardware threads. Here are a few I have tried so far:
- Using a USB / Ethernet dongle rather than plugging into the NIC
- Unplugging the computer, modem, and router, waiting 30 minutes, and then plugging them back in.
- Disabling some IPv6 features
- Disabling DHCP and manually entering the IPv4 Address/Subnet Mask/Default Gateway/DNS Servers

With each of the above solutions, the internet has worked some of the time, and not worked some of the time. When I try to troubleshoot the issue, I get various errors depending on the settings, most notably "The default gateway is not available" and "'Local Area Connection 2' doesn't have a valid IP configuration." These were the errors I Googled when trying to solve this problem, but I can't tell if the 'fixes' had any effect at all. I would very much like for this problem to go away permanently, but I'm at a complete loss for how to do it.

Hardware Information:

Spoiler

Operating System: Windows 10 Pro 64-bit
CPU: Intel Core i7 Extreme 980X @ 3.33GHz
RAM: 12.0GB Triple-Channel DDR3 @ 540MHz
Motherboard: Intel Corporation DX58SO (J1PR)

Router: D-Link 5 Port Gigabit Unmanaged Metal Desktop Switch (DGS-105)
Router Thingy: Powerline 1-port Gigabit Ethernet Adapter (PLE500) (I didn't set up the internet, so I'm not sure what else to call it. It turns a power outlet into an ethernet thing.)

ipconfig /all:

Spoiler

C:\Users\Brian>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : Coyote
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) 82567LM-2 Gigabit Network Connection
Physical Address. . . . . . . . . : E0-69-95-DE-14-BC
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 192.168.0.125(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Monday, August 10, 2015 1:46:14 AM
Lease Expires . . . . . . . . . . : Monday, August 17, 2015 1:48:29 AM
Default Gateway . . . . . . . . . : 192.168.0.1
DHCP Server . . . . . . . . . . . : 192.168.0.1
DNS Servers . . . . . . . . . . . : 192.168.0.1
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter isatap.{624EB7FF-7228-4CC4-97A4-D423C12FBA21}:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft ISATAP Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Teredo Tunneling Pseudo-Interface:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Teredo Tunneling Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2001:0:9d38:90d7:203b:2c33:b38e:8bf3(Preferred)
Link-local IPv6 Address . . . . . : fe80::203b:2c33:b38e:8bf3%3(Preferred)
Default Gateway . . . . . . . . . : ::
DHCPv6 IAID . . . . . . . . . . . : 201326592
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-17-5F-DF-E3-E0-69-95-DE-14-BC
NetBIOS over Tcpip. . . . . . . . : Disabled

I'm not the most tech-savvy of users, so pretty much any input at all is welcome!

those powerline adapters are notoriously unreliable, worse than wireless. you may have a large appliance or something like that on the same circuit causing interference. try plugging it into a different power outlet. better yet, run a nice shielded CAT 6 cable from the D-Link directly into your PC