I've installed Win7 on my desktop as a dual-boot system with XP/SP3 Media Center. Everything's been working just great until I tried to connect one of my laptops (running XP) to Win7 via my home network as I've always done for file/printer sharing. Somehow in the process I've lost access to the internet on Win7 and can't get it back. The network settings flag on the taskbar says the following: Network No internet access Unidentified Network No internet access I did make changes to Win7 network settings as I've done many times before with XP, but nothing works. I know the problem's not hardware as the XP install on the same computer with the same hardware connects just fine. 1: Is there some way to re-set the Win7 network settings to how they were right after install? 2: What exactly did I do wrong? 3: Are there any tutorials/how-tos on Win7 networking available? And if anybody feels like giving a bit of extra help... 4: I never was able to connect the XP laptop to Win7 either. How do I do that? Thanks for any help. Ed

You can check your TCP/IP settings by issuing the following at the command prompt:ipconfig /allIf things appear correct, but you still cannot get internet access, you can try resetting TCP/IP using one of the following two methods:1: Automatic method to reset TCP/IPTo fix this problem automatically, click the Fix this problem link. Then click Run in the File Download dialog box, and follow the steps in this wizard. Fix this problem 2: Use a manual method to reset TCP/IP Note This section is intended for advanced computer users. If you are not comfortable with advanced troubleshooting, ask someone for help or contact Support. For information about how to contact Support, see the Microsoft Help and Support contact information Web site: http://support.microsoft.com/contactus (http://support.microsoft.com/contactus) The reset command is available in the IP context of the NetShell utility. Follow these steps to use the reset command to reset TCP/IP manually: To open a command prompt, click Start and then click Run. Copy and paste (or type) the following command in the Open box and then press ENTER: cmd At the command prompt, copy and paste (or type) the following command and then press ENTER: netsh int ip reset c:\resetlog.txt Note If you do not want to specify a directory path for the log file, use the following command: netsh int ip reset resetlog.txt Reboot the computer. Source: http://support.microsoft.com/kb/299357

As for tutorials, here's a list of them from WindowsNetworking.com:Networking Basics: Part 1 - Networking HardwareNetworking Basics: Part 2 - RoutersNetworking Basics: Part 3 - DNS ServersNetworking Basics: Part 4 - Workstations and ServersNetworking Basics: Part 5 - Domain ControllersNetworking Basics: Part 6 - Windows DomainNetworking Basics: Part 7 - Introduction to FSMO RolesNetworking Basics: Part 8 - FSMO Roles continuedNetworking Basics: Part 9 Active Directory InformationNetworking Basics: Part 10 - Distinguished NamesNetworking Basics: Part 11 - The Active Directory Users and Computers ConsoleNetworking Basics: Part 12 - User Account ManagementNetworking Basics: Part 13 - Creating GroupsNetworking Basics: Part 14 - Security GroupsNetworking Basics: Part 15 - Universal Groups & Group NestingNetworking Basics: Part 16 - The Windows Operating System's Role in NetworkingNetworking Basics: Part 17 - The OSI ModelNetworking Basics: Part 18 - Sharing ResourcesNetworking Basics: Part 19 - Share Level PermissionsNetworking Basics: Part 20 - File Level PermissionsTCP/IP Troubleshooting: A Structured Approach - Part 1: An IntroductionTCP/IP Troubleshooting: A Structured Approach - Part 2: Troubleshooting Routing TablesTCP/IP Troubleshooting: A Structured Approach - Part 3: Repairing Network ConnectionsTCP/IP Troubleshooting: A Structured Approach - Part 4: Using Netdiag.exeTroubleshooting Connectivity Problems on Windows Networks (Part 1)Troubleshooting Connectivity Problems on Windows Networks (Part 2)Troubleshooting Connectivity Problems on Windows Networks (Part 3)Troubleshooting Connectivity Problems on Windows Networks (Part 4)Troubleshooting Connectivity Problems on Windows Networks (Part 5)

Thanks for the reply, Ryan. Unfortunately none of the fixes you mentioned worked. When I run the ipconfig/all command I get the following: Microsoft Windows [Version 6.1.7100] Copyright (c) 2009 Microsoft Corporation. All rights reserved. C:\Users\Ed>ipconfig /all Windows IP Configuration Host Name . . . . . . . . . . . . : Carver-7 Primary Dns Suffix . . . . . . . : Node Type . . . . . . . . . . . . : Hybrid IP Routing Enabled. . . . . . . . : No WINS Proxy Enabled. . . . . . . . : No Ethernet adapter Local Area Connection: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Broadcom NetXtreme 57xx Gigabit Controlle r Physical Address. . . . . . . . . : 00-11-11-79-B3-70 DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes Link-local IPv6 Address . . . . . : fe80::c1c1:8397:9b1c:e26c%11(Preferred) IPv4 Address. . . . . . . . . . . : 192.168.1.3(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.255.0 Lease Obtained. . . . . . . . . . : Monday, May 25, 2009 10:34:50 AM Lease Expires . . . . . . . . . . : Tuesday, May 26, 2009 10:18:30 AM Default Gateway . . . . . . . . . : 0.0.0.0 192.168.1.1 DHCP Server . . . . . . . . . . . : 192.168.1.1 DHCPv6 IAID . . . . . . . . . . . : 234885393 DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-11-A8-F0-09-00-11-11-79-B3-70 DNS Servers . . . . . . . . . . . : 192.168.1.1 NetBIOS over Tcpip. . . . . . . . : Enabled Tunnel adapter isatap.{0A8219F3-B019-487D-B963-C777BF8C8B60}: 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 Local Area Connection* 9: 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 C:\Users\Ed> And when I run the fix I get the following: Reseting Global, failed. The requested operation requires elevation (Run as administrator). Reseting Interface, failed. The requested operation requires elevation (Run as administrator). There's no user specified settings to be reset. I'm out of ideas on this one. Any other suggestions, or do I have to reinstall Win7RC? Thanks, Ed

It gets curiouser and curiouser as the cat says. If I boot into Safe Mode with networking, the internet connection works just fine. So something is set differently in regular mode - my guess is some security setting, but if I knew I wouldn't be posting here, would I? Hope this helps. Ed

One last bit of info: I was able to restore the network settings - briefly - by going to the Network Sharing Center and disconnecting from all networks, then opening the troubleshooter and having it figure out how to connect. This is a temporary fix however, and doesn't last long. Problems: 1: The network map says I have multiple networks set up, a Home and a "Unidentified Public" network. That's not the case, as I have a simple ethernet to wifi router connection only, and connect to my laptop usually by wifi and occasionally by a spare ethernet cable if I'm working both computers at the same time. 2: The restored connection does not last. Just loading IE can crash the connection, though not consistenly. Sometimes I can browse for a few minutes with no problem. 3: The connection does not survive a restart. OK, last post on this. If I must, I'll reinstall Win7. I'd sure like to know what went wrong though so I don't do it again. Ed

In order to fix this problem: Reseting Global, failed. The requested operation requires elevation (Run as administrator). Reseting Interface, failed. The requested operation requires elevation (Run as administrator). There's no user specified settings to be reset.You need to run the command prompt as an administrator. To do this, search for command prompt in the Start menu, right click it, and select "Run as administrator". This should allow you to run the fixes you were trying to use.As for other problems, I think it may be related to having 2 default gateways listed. The second, 192.168.1.1, is your router and that seems to be correct but I don't know why the first one is listed at all or why its 0.0.0.0. I will look into that and see what I can find, but if any other commenters have seen this problem before feel free to post a solution.-Nick

Thanks for the reply, Nick. I ran the TCP check as admin and it worked as you said. Rebooted however, and still the same problem. I can duplicate the repair to get things working now exactly: 1. On boot, the network can't connect to the 'net. 2. Open Network and Sharing and the map shows my computer connected to "multiple networks": one home, one "unidentified public." 3. Click on unidentified, disable. 4. Click on "connect or disconnect", run troubleshooter as admin and network enables, and a single network pops up, the map shows my computer->Networt->Internet, which is correct. This must be done after each boot to get to the 'net. Only think I can think of is I messed up something when looking to connect my notebook. Otherwise got me on this one. Ed

Try this from an elevated command prompt (right-click -> Run as administrator):netsh interface ip set address name="Local Area Connection" static 192.168.1.3 255.255.255.0 192.168.1.1 1netsh interface ip set dns "Local Area Connection" static 208.67.222.222The last line will just use OpenDNS to resolve domain names.

Ryan, that worked! Can you give me a quick 25wordsorless explanation of what went wrong? Or what I did wrong during setup? If not, no worries. Thanks SO much! Ed

Not exactly sure myself without looking at the router configuration, but it could be the 0.0.0.0gateway acquired by DHCP or perhaps the router isn't configured to act as a DNS server. All I could suggest is to change the DNS back to the original and see if it still works:netsh interface ip set dns "Local Area Connection" static 192.168.1.1

Do you have iTunes installed? If so, please read KB article http://support.microsoft.com/?id=970313which provides a work-around.