My previously connected Internet connection changed to unidentified network when I used a new laptop. It wouldn't find a valid IP address, I did try to set the properties to find IP address automatically, and then restart the laptop.However, i still can't do it What can I do to fix this, I only recently bought the laptop with Windows 7 Home Premium, so I can't see how it's affected in any way. I already remove the Norton and Macfree. However, the problem is still there.

Open cmd.exe Run ipconfig /release then run ipconfig /renew This will request a new IP address from the dhcp server (probably your router). If this does not work, run ipconfig /all and post the results here

Hi I am getting the same problem. I've tried the above and loaded my machine in Selected start up mode but still getting the same issue. Here is my result when run ipconfig /all -------------------- Windows IP Configuration Host Name . . . . . . . . . . . . : FeLogic-Ltd Primary Dns Suffix . . . . . . . : Node Type . . . . . . . . . . . . : Hybrid IP Routing Enabled. . . . . . . . : No WINS Proxy Enabled. . . . . . . . : No DNS Suffix Search List. . . . . . : Home Wireless LAN adapter Wireless Network Connection 2: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Microsoft Virtual WiFi Miniport Adapter Physical Address. . . . . . . . . : 38-59-F9-9C-F8-6D DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes Wireless LAN adapter Wireless Network Connection: Connection-specific DNS Suffix . : Home Description . . . . . . . . . . . : Broadcom 802.11n Network Adapter Physical Address. . . . . . . . . : 38-59-F9-9C-F8-6D DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes Link-local IPv6 Address . . . . . : fe80::eded:5e32:4677:509a%12(Preferred) IPv4 Address. . . . . . . . . . . : 192.168.0.3(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.255.0 Lease Obtained. . . . . . . . . . : 17 August 2012 12:33:02 Lease Expires . . . . . . . . . . : 18 August 2012 12:33:02 Default Gateway . . . . . . . . . : 192.168.0.1 DHCP Server . . . . . . . . . . . : 192.168.0.1 DHCPv6 IAID . . . . . . . . . . . : 389569017 DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-15-DE-AD-1E-B8-70-F4-DF-95-6D DNS Servers . . . . . . . . . . . : 192.168.0.1 NetBIOS over Tcpip. . . . . . . . : Enabled Ethernet adapter Local Area Connection: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : PXE.ACER.COM Description . . . . . . . . . . . : Broadcom NetLink (TM) Gigabit Ethernet Physical Address. . . . . . . . . : B8-70-F4-DF-95-6D DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes Tunnel adapter isatap.Home: 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 TeredoTunneling Pseudo-Interface: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Description . . . . . . . . . . . : TeredoTunneling Pseudo-Interface Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0 DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes

Hi, Before going on, I would like to know how does the computer connect the Internet. If the machine is connected via Wireless or router, I suggest you bypass the router and connect to cable modem directly to check the result. Meanwhile, please try the following: 1. Update your NIC driver to the latest version. 2. Test if this issue persists in Safe Mode with Networking. If this issue does not occur in Safe Mode, please boot into Clean Boot mode to check the result. Hope this helps. Vincent Wang TechNet Community Support

Try going into your tcp/ip settings, and change your dns server from automatic to 8.8.8.8 (googles public dns server) . Here's an article on how to do this :D http://windows.microsoft.com/en-US/windows7/Change-TCP-IP-settings

Hi, Before going on, I would like to know how does the computer connect the Internet. If the machine is connected via Wireless or router, I suggest you bypass the router and connect to cable modem directly to check the result. Meanwhile, please try the following: 1. Update your NIC driver to the latest version. 2. Test if this issue persists in Safe Mode with Networking. If this issue does not occur in Safe Mode, please boot into Clean Boot mode to check the result. Hope this helps. Vincent Wang TechNet Community Support