Unidentified Network No Internet Access: "Ethernet" doesn't have a valid IP configuration

For starters, I've already tried disconnecting my modem, restarting my computer, using every known command I could find (ipconfig /release, ipconfig /renew, etc.), reinstalling and updating my network driver, and even switching out ethernet cables. I've no idea what's wrong, and I'm far from being an expert with networking. I'm currently using a Netgear Power-Line adapter to connect my PC to my modem, running Windows 10 with a Realtek PCIe GBE Family Controller, and I've posted the "ipconfig /all" results below:

Windows IP Configuration

Host Name . . . . . . . . . . . . : DESKTOP-SP9PGAB
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : attlocal.net

Ethernet adapter Ethernet:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller
Physical Address. . . . . . . . . : 40-8D-5C-56-80-2A
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::bdb2:698:ba68:eb6d%12(Preferred)
Autoconfiguration IPv4 Address. . : 169.254.235.109(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . :
DHCPv6 IAID . . . . . . . . . . . : 172002652
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-1D-EE-E9-B1-40-8D-5C-56-80-2A
DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1
fec0:0:0:ffff::2%1
fec0:0:0:ffff::3%1
NetBIOS over Tcpip. . . . . . . . : Enabled

Wireless LAN adapter Local Area Connection* 8:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Wi-Fi Direct Virtual Adapter
Physical Address. . . . . . . . . : 76-DA-38-63-8A-94
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Wireless LAN adapter Wi-Fi:

Connection-specific DNS Suffix . : attlocal.net
Description . . . . . . . . . . . : Realtek RTL8811AU Wireless LAN 802.11ac USB 2.0 Network Adapter
Physical Address. . . . . . . . . : 74-DA-38-63-8A-94
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2602:30a:c0bd:c270:1cf2:31cb:3d:2b2f(Preferred)
Temporary IPv6 Address. . . . . . : 2602:30a:c0bd:c270:d14a:cb54:f9e2:e00d(Preferred)
Link-local IPv6 Address . . . . . : fe80::1cf2:31cb:3d:2b2f%17(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.1.78(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Sunday, February 26, 2017 11:57:33 AM
Lease Expires . . . . . . . . . . : Monday, February 27, 2017 11:57:33 AM
Default Gateway . . . . . . . . . : fe80::fa18:97ff:fe78:84dd%17
192.168.1.254
DHCP Server . . . . . . . . . . . : 192.168.1.254
DHCPv6 IAID . . . . . . . . . . . : 208984632
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-1D-EE-E9-B1-40-8D-5C-56-80-2A
DNS Servers . . . . . . . . . . . : 2602:30a:c0bd:c270::1
192.168.1.254
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter isatap.{DCBC0B23-13DA-48FC-87EC-EAB1BD2D50E8}:

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 Local Area Connection* 3:

Media State . . . . . . . . . . . : Media disconnected
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

Tunnel adapter isatap.attlocal.net:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : attlocal.net
Description . . . . . . . . . . . : Microsoft ISATAP Adapter #2
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

I'm currently able to connect via Wi-Fi, so the internet is still working, but I can't seem to connect via ethernet cable for some reason. Thank you in advance for any responses, and if you need more information I'm happy to provide it.