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Windows 7: Wireless network-IP doens't have a valid configuration


13 Feb 2010   #1

Windows 7
 
 
Wireless network-IP doens't have a valid configuration

I've followed these steps shown on the website....still my internet doesn't work in my laptop.
Does any one have any idea about what I could do?

"Wireless Network Connection doesn't have a valid IP address"


Method 1:
Fixing Common networking connectivity issue:
This article in for Windows Vista but applies for Windows 7 also.

To reset the TCP/IP stack go to this article and either click on "Fix it for me" or follow the instructions to fix it yourself:
http://support.microsoft.com/kb/299357

Disable the IP Helper service
1. Hold the Windows key and type R, enter "services.msc" (without the quotes) and press Enter
2. Scroll down to the IP Helper service, right click on it and select Properties
3. In the dropdown box that says "Automatic" or "Manual", set it to Disabled and then click on "Apply"
4. Then click on "Stop" to stop the service from running in the current session
5. Click OK to exit the dialog

Disable IPv6
Try uninstalling IPv6 on all interfaces, removing any IPv6 virtual adapters, and resetting the TCP/IP stack. To remove IPv6, go into the properties for each network adapter and either uncheck the box next to the protocol "Internet Protocol version 6 (TCP/IPv6), that will disable it, or select it and click uninstall, which will remove it off the computer. Then go into device manager and remove any 4to6 adapters, WUN miniport adapters, or tunnel adapters.
NOTE: You should do this for each network connection.

Disable the DHCP Broadcast Flag
Link:
http://support.microsoft.com/default.aspx/kb/928233
Important: This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
http://support.microsoft.com/kb/322756 (How to back up and restore the registry in Windows)
Windows Vista cannot obtain an IP address from certain routers or from certain non-Microsoft DHCP servers
To resolve this issue, disable the DHCP BROADCAST flag. To do this, follow these steps:
1. Click Start, type “regedit” in the Start Search box and then click “regedit” in the Programs list.
If you are prompted for an administrator password or for confirmation, type your password, or click Continue.
2. Locate and then click the following registry subkey:
“HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\{GUID}”
3. In this registry path, click the (GUID) subkey that corresponds to the network adapter that is connected to the network.
4. On the Edit menu, point to New, and then click DWORD (32-bit) Value.
5. In the New Value #1 box, type “DhcpConnEnableBcastFlagToggle” and then press ENTER.
6. Right-click “DhcpConnEnableBcastFlagToggle” and then click Modify.
7. In the Value data box, type 1 and then click OK.
8. Close Registry Editor.
By setting this registry key to 1, Windows Vista will first try to obtain an IP address by using the BROADCAST flag in DHCP Discover packets. If that fails, it will try to obtain an IP address without using the BROADCAST flag in DHCP Discover packets.

Method 2:
Follow the steps mentioned below to check if your computer has a wireless network adapter.
1. Open Device Manager by clicking the Start button, clicking Control Panel, clicking System and Security and then, under System, clicking Device Manager.*
If you're prompted for an administrator password or confirmation, type the password or provide confirmation.
2. Double-click Network adapters.
3. Look for a network adapter that includes "wireless" in the name.
If it is not set then follow the article mentioned below to set the Wireless network connection.
Setting up a wireless network

http://windows.microsoft.com/en-US/windows7/Setting-up-a-wireless-network
Open networking troubleshooters
http://windows.microsoft.com/en-IN/windows7/Open-networking-troubleshooters
Method 3:
You could also try ipconfig/release an renew command from the command prompt.
Follow the steps mentioned below.
1. Click on start button.
2. Type cmd in the strat search box and press enter.
3. Right click on the “cmd” and run as administrator.
4. Type the commands “ipconfig /release” and “ipconfig /renew” without the qouts.

My System SpecsSystem Spec
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 Wireless network-IP doens't have a valid configuration




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