Vista SP2 wireless connection drops

People, I know this question has been asked before, but I can't find a solution to my problem.  I've had my Dell laptop for about 6 months now and it worked perfectly, without any problem wireless connection.  On Sunday, August 9, I installed Vista SP2.  It updated no problem at all, but once he did his final reboot, it connected to my wireless router for about 5 minutes, then dropped connection.  Now, when you restart it only connects for a minute or two wireless then abandons connection.  I then uninstalled SP2 but it has not solved the problem with wireless.  My wireless adapter is an Atheros AR5007 and drivers are all up to date.

Anyone know how I can fix this so that my wireless signal stay tuned as he used to pre SP2?
Thank you.

Hi KK_14,

Thank you for visiting Windows Vista Microsoft answers forum.

Fixing the problems of common networking in Vista:

To reset the stack TCP/IP 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 helpdesk:

1 hold the Windows key and type R, type "services.msc" (without the quotes) and press enter

2. scroll down to the IP assistance service, right-click on it and select Properties

3. in the drop-down list box that says "Automatic" or "Manual", set it to disabled and then click 'apply '.

4. then click on "Stop" to stop the service from running in the current session

5. click on OK to exit the dialog box

Disable IPv6:

Try to uninstall IPv6 on all interfaces, the removal of virtual cards of IPv6 and reset the TCP/IP stack. To remove the IPv6, go to the properties for each network adapter, and deselect the check box next to the Protocol "Internet Protocol version 6 (TCP/IPv6), which will turn off, or select it and click on uninstall, which withdraw power off the computer.» Then go into Device Manager and remove any 4to6 adapters, adapters miniport WUN 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 can occur if you modify the registry incorrectly. Therefore, make sure that you proceed with caution. For added protection, back up the registry before you edit it. Then you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click on the number below 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 some non-Microsoft DHCP servers

To resolve this issue, disable the DHCP BROADCAST flag in Windows Vista. To do this, follow these steps:

Click Start, type regedit in the search box, and then click regedit in the list programs.

If you are prompted for an administrator password or for confirmation, type your password, or click on continue.

Locate and then click the following registry subkey:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\ {GUID}

This registry path, click the (GUID) subkey that corresponds to the card network that is connected to the network.

On the Edit menu, point to new, and then click DWORD (32-bit) value.

In the new area #1, type DhcpConnEnableBcastFlagToggle and press ENTER.

Right-click DhcpConnEnableBcastFlagToggle, then click on modify.

In the value data box, type 1 and then click OK.

Close the registry editor.

By setting this registry key to 1, Windows Vista's trying to get an IP address using the BROADCAST flag in DHCP Discover packets. If that fails, he will try to obtain an IP address without using the BROADCAST flag in DHCP Discover packets.

Please let us know if it helps.

Thank you and best regards,
David

Tags: Windows

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    Here's a recap of what I found:
    1. laptop could not connect wireless router again, despite dozens of attempts in which I get every available straw
    2. laptop computer could see the internet when connected to the router
    3. laptop could connect wirelessly to the router while the wired connection is in place
    4. Once this first wireless, laptop computer was able to connect to the router even when the wired connection has been removed and the computer restarts

    I would describe my discovery above as a work-around rather than as a solution, however.  It does not always help me stay connected the next time I'm on vacation, for example.  But perhaps the information I provided can help experts to diagnose the real problem a little.

    I look forward to hear something back.

    Jim

  • Upgrade of Vista SP2-loss of internet connection

    I upgraded a VISTA 64 laptop computer to SP2 yesterday evening.  He seems to have retained my 802.11n network configuration, but since the upgrade will connect only locally, not to the internet via the wireless connection.  (It is not a problem with my network or modem, as another VISTA laptop wireless and other devices will continue to work properly.)  The ethernet connection works fine. I tried:

    • disable the firewall (Norton)
    • Diagnose and repair
    • confirmed connection to the router
    • newspapers of router checked-only MAC address is not blocked
    • updated the Intel 4965AGN driver to the latest version

    Any suggestions?  I am reluctant to completely recede SP2 unless absolutely necessary.

    lopburi3,

    This looks exactly like my question.  While I do not understand what has happened, I found a solution. Try this:

    • Log into your router and check what IP address is assigned to the computer that is not connecting.  If there is no assignment yet, give it a static address.
    • Go into your wireless connection TCP/IP properties and enter the manual configuration information: IP address assigned, the subnet mask and the router (default gateway) address.

    For me, allowed me to connect through Internet.

    Edit:
    as a first step, I had to re - enter the manual configuration after each reboot, and my router would not correctly identify the MAC address of my laptop (he appeared as 00:00:00:00:00:00).  After a couple more re - start last night, the computer retains the settings, so I could connect without having to re-enter the configuration, if the router is not yet MAC address list.

    I've then updated the firmware on my router last night.  (D-Link DIR-655)  Now, after another reboot, everything seems to work properly, with the portable duly identified in the router. There was clearly a problem with the network adapter and the router communicates correctly. brodyboy

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