Hi All, i have a sony vaio fz11s and it had been working fine for over a year before yesterday it suddenly stopped the internet connection via a netgear route. Now i have done many things to try and fix this fault but know of these work and i have rolled back each time to start over again. But it seems like it keeps changing my WEP key, my is 10 letters long but it seems to change it to be 8. i have disabled the ipv6 to no joy and now am really really worried. also in device manager is says that the "microsoft ISATAP adapted #8" is not working correctly. Here is the ipconfig/all if anyone has any idea let me know many thanks Dan C:\Users\username>ipconfig/all Windows IP Configuration Host Name . . . . . . . . . . . . : DJB-PC Primary Dns Suffix . . . . . . . : Node Type . . . . . . . . . . . . : Hybrid IP Routing Enabled. . . . . . . . : No WINS Proxy Enabled. . . . . . . . : No Ethernet adapter Local Area Connection 2: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Bluetooth Personal Area Network Physical Address. . . . . . . . . : 00-19-C1-A1-39-83 DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes Wireless LAN adapter Wireless Network Connection: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Intel(R) PRO/Wireless 3945ABG Network Connection Physical Address. . . . . . . . . : 00-1B-77-14-C9-ED DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes Autoconfiguration IPv4 Address. . : 169.254.144.54(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.0.0 Default Gateway . . . . . . . . . : NetBIOS over Tcpip. . . . . . . . : Enabled Ethernet adapter Local Area Connection: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Marvell Yukon 88E8036 PCI-E Fast EthernetController Physical Address. . . . . . . . . : 00-13-A9-C0-1F-39 DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes Tunnel adapter Local Area Connection* 9: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface Physical Address. . . . . . . . . : 02-00-54-55-4E-01 DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes Tunnel adapter Local Area Connection* 24: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Description . . . . . . . . . . . : isatap.{950EFCC9-0A9D-4094-A016-1BB047890900} Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0 DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes Tunnel adapter Local Area Connection* 25: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Description . . . . . . . . . . . : isatap.{950EFCC9-0A9D-4094-A016-1BB047890900} Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0 DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes Tunnel adapter Local Area Connection* 27: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Description . . . . . . . . . . . : isatap.{950EFCC9-0A9D-4094-A016-1BB047890900} Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0 DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes Tunnel adapter Local Area Connection* 28: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Description . . . . . . . . . . . : isatap.{950EFCC9-0A9D-4094-A016-1BB047890900} Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0 DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes Tunnel adapter Local Area Connection* 30: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Description . . . . . . . . . . . : isatap.{93EAF8B0-C9EC-4F63-9F11-E8D9999E36EB} Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0 DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes Tunnel adapter Local Area Connection* 33: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Description . . . . . . . . . . . : isatap.{950EFCC9-0A9D-4094-A016-1BB047890900} Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0 DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes Tunnel adapter Local Area Connection* 13: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Microsoft ISATAP Adapter #9 Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0 DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes Tunnel adapter Local Area Connection* 14: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Microsoft ISATAP Adapter #5 Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0 DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes Link-local IPv6 Address . . . . . : fe80::5efe:169.254.144.54%37(Preferred) Default Gateway . . . . . . . . . : NetBIOS over Tcpip. . . . . . . . : Disabled C:\Users\username>

Hi, From the output of the wireless connection has been connected but it cannot obtain an IP address from the DHCP server. If you are using the Netgear Router as a DHCP server in the environment, please confirm the settings on the Router. If the settings in the Router are correct, perform the steps in the following KB and check the result: Windows Vista cannot obtain an IP address from certain routers or from certain non-Microsoft DHCP servers http://support.microsoft.com/kb/928233 Regarding the ISATAP adapter issue, you can safely ignore this error message because you are not using IPv6. For more information, please refer to the following KB: On a Windows Vista-based computer or on a Windows Server 2008-based computer, the Microsoft ISATAP adapter appears with a yellow exclamation mark next to it in Device Manager, and you also receive an error message http://support.microsoft.com/kb/932520

Hi thanks for your reply. Ihave sloved the problem by unistalling norton internet anit-virus. i have a deadline to meet for work and need the internet, so for the time being i am going to leave it off. but once i have done it, i will reinstall it and see if the infomation you provided fixes the problem. many many thanks (p.snorton was showing asdisabled and i couldnt turn it back on because i needed a liveinternetconnection. so if anyoneelse has this problem just do what i did and then follow zhou's help and let me know if it works) ThanksDan