My computer can usually connect to most wireless networks, but after coming home from college, it has been unable to connect to anything (except the college network itself). The error it gives me is "Local Area Connection doesn't have a valid IP configuration." When I accessed the CMD and ran ipconfig /all I received the following information: Microsoft Windows [Version 6.1.7600] Copyright (c) 2009 Microsoft Corporation. All rights reserved. C:\Users\OMMITED>ipconfig /all Windows IP Configuration Host Name . . . . . . . . . . . . : OMMITED-PC Primary Dns Suffix . . . . . . . : Node Type . . . . . . . . . . . . : Hybrid IP Routing Enabled. . . . . . . . : No WINS Proxy Enabled. . . . . . . . : No Wireless LAN adapter Wireless Network Connection: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Atheros AR5007EG Wireless Network Adapter Physical Address. . . . . . . . . : 00-1F-3A-67-7F-6B DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes Link-local IPv6 Address . . . . . : fe80::3892:cb67:975b:a6b1%12(Preferred) Autoconfiguration IPv4 Address. . : 169.254.166.177(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.0.0 Default Gateway . . . . . . . . . : fe80::218:e7ff:fee7:7fd0%12 DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1 fec0:0:0:ffff::2%1 fec0:0:0:ffff::3%1 NetBIOS over Tcpip. . . . . . . . : Enabled Ethernet adapter Local Area Connection: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Realtek RTL8101E Family PCI-E Fast Ethern et NIC (NDIS 6.0) Physical Address. . . . . . . . . : 00-1E-EC-06-4D-1A DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes Tunnel adapter isatap.{11639084-B54C-4269-BC4D-327E315D0C8A}: 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 Tunnel adapter isatap.{70BFB634-CFB6-4807-AAC9-A8D85074D452}: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Microsoft ISATAP Adapter #2 Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0 DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes C:\Users\OMMITED> P.S. I get the same error when I try to use an ethernet cable. PLEASE HELP!

Just a thought, is this a notebook or desktop pc? Btw are you connecting directly through modem or with router as well?

The computer is a Toshiba Satellite laptop. And I am using a router. BTW I have managed to successfully connect to a neighbors unsecured network but still not with the home network.

The computer is a Toshiba Satellite laptop. And I am using a router. BTW I have managed to successfully connect to a neighbors unsecured network but still not with the home network. Is there a passphrase and ssid being set and enable in your router? If there is, you need to ensure both notebook and router passphrase and ssid is the same. Having say that, you would need to logged into the router config page to do the changes and remember to save prior to exiting the router config page (use a ethernet cable to connect when you're doing the above) You might want to temp disable the security feature for the passphrase and ssid, and next do a scan to detect your wireless network. If you're able to detect your home wireless network, high chances the problem lies with the security feature enable