Ethernet No Longer Working

lMementoMori

Reputable
Jul 15, 2014
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0
4,510
My Ethernet port is no longer working. I have a feeling that it was the storm yesterday, however I'm not 100% certain so I'm asking if anyone has any ideas before I replace it. The modem was fried after the storm and I have already replaced it with a new one from the ISP so this could also be an issue with the new router/modem.

CPU: Intel i7-4770k
Motherboard: Asus Z97-A
PSU: Corsair AX760
OS: Windows 7 Home Premium 64-bit

Router/Modem: Sagemcom 1704N
ISP: Windstream DSL

I have a Netgear FS105 Switch with 5 ports.

The reason I'm not completely sure whether or not the port is fried is because it will detect an Ethernet cable and say that I'm connected to an unidentified network without Internet access, though this could be the switch since it says the same whether or not the switch is connected to the router. I've tried the Ethernet cable running directly from the router on my laptop and it works fine. I've also plugged that cable into the switch and connected my laptop to the switch via another cable which also worked fine. I'm receiving "'Local Area Connection' doesn't have a valid IP configuration" error when I troubleshoot the connection.

Any help would be greatly appreciated, sorry if I forgot something or rambled on.
 
Solution
If a laptop networked directly to the router or via the switch can connect using the same cable and port that the desktop uses, I'd say that the LAN adapter on the desktop is the problem.

If you know how, you can set a static IP address on the desktop and see if that allows a connection. It seems more like a configuration issue rather than a hardware failure.
If a laptop networked directly to the router or via the switch can connect using the same cable and port that the desktop uses, I'd say that the LAN adapter on the desktop is the problem.

If you know how, you can set a static IP address on the desktop and see if that allows a connection. It seems more like a configuration issue rather than a hardware failure.
 
Solution

plivin89

Reputable
Jun 11, 2014
140
0
4,710
go into command prompt and do a ipconfig /release then ipconfig /renew. if that does not work then go into network and sharing then adapter settings, click on the local area connection and hit properties then click ipv4 and check if dhcp is enabled. also to test if the hardware is not damaged go into command prompt and type ping 127.0.0.1.