Hello, I've been using windows 7 64bit with no issues for 2-3 months, I recently as sitting at my computer when I had a power cut, then I started having problems with my LAN.... When the power came back, I logged onto my computer and discovered I could not connect to the internet, it said I was connected to an "Unidentified Network". Not knowing what caused this, I assumed it was the power cut, so I tried using a lot of help threads to try and solve the "Unidentified Network" issue. I also ran the troubleshooter, and it said "Local Area Connection does not have a valid IP address". I tried changing it statically - No success. I tried reinstalling drivers - No success. Short of buying a new NIC, I have tried everything, noting appears to work. When I connect the Ethernet cable I have two solid orange lights at the slot on my computer. Here's a printout of my ipconfig/all maybe there's something I've dont wrong or something has configured itself wrongly. Microsoft Windows [Version 6.1.7600] Copyright (c) 2009 Microsoft Corporation. All rights reserved. C:\Users\main>ipconfig /flushdns Windows IP Configuration Successfully flushed the DNS Resolver Cache. C:\Users\main>ipconfig /all Windows IP Configuration Host Name . . . . . . . . . . . . : main-PC Primary Dns Suffix . . . . . . . : Node Type . . . . . . . . . . . . : Hybrid IP Routing Enabled. . . . . . . . : No WINS Proxy Enabled. . . . . . . . : No Ethernet adapter Local Area Connection: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : NVIDIA nForce Networking Controller Physical Address. . . . . . . . . : 00-1D-7D-D6-68-68 DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes Link-local IPv6 Address . . . . . : fe80::c800:26b4:e3d8:1438%24(Preferred) Autoconfiguration IPv4 Address. . : 169.254.20.56(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.0.0 Default Gateway . . . . . . . . . : DHCPv6 IAID . . . . . . . . . . . : 402660733 DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-14-36-6A-D7-00-1D-7D-D6-68-68 DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1 fec0:0:0:ffff::2%1 fec0:0:0:ffff::3%1 NetBIOS over Tcpip. . . . . . . . : Enabled Tunnel adapter isatap.{8A3D799A-41B1-4470-81D2-B9C860C5AF46}: 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: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0 DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes

Hi, Thanks for the post! This issue is caused by an invalid IP. Let’s try to get new IP automatically. Input cmd in search bar, run as administrator Input ipconfig /release, then input ipconfig /renew If it’s still fail, please input ipconfig /all in cmd to check the result to see if the computer have a valid IP. Does the computer connect to a network device? Such as router or switch. Please temporarily remove/replace it to check if it works. In same sub net, other computers? Do they work? Regards, MiyaThis posting is provided "AS IS" with no warranties, and confers no rights. | Please remember to click "Mark as Answer" on the post that helps you, and to click "Unmark as Answer" if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.