I keep getting this message - Your computer appears to be correctly configured, but the device or resource (DNS server) is not responding)

I've been using Windows 7 on both my Dell and HP laptops for several months now with few problems.   This morning while using my Dell laptop there was a 3 or 4 second power outage that took down my router and DSL modem, but not my Dell laptop (it was on batteries).   After rebooting my modem and router I was unable to reconnect with my Dell machine but was able to connect with my HP laptop (it was't on during the power outage).

I can ping the router and other computers on the LAN but can't ping outside IP addresses. When looking at the network site map I can see a connection between my computer and the router but there is a red X between the router icon and the internet icon.  My HP laptop continues to work fine so I'm certain it is not a problem with the router or DSL modem.  I've checked TCP/IP setting between both machines and they are identical.    There is a new network connection icon named "Wireless Network Connection 2" that is said to be a "Microsoft Virtual WiFi Miniport Adapter" .   I read another posting that said to disable this device but that did no good.

What should I try next?

I have been on the phone for hours with AT&T and they have no idea why my DNS server stops responding.  The other laptop in the house is perfectly fine no problems, runs on an older version of Windows.  I am running Windows 7, when the server stops responding I am switching between two different DNS addresses and having it automatically assign, it will work for a period of time and then it's gone and I have to go through the whole process again.  I do not have a mini port wifi adapter, I have tried removing the firewall which makes no difference.  Any help is greatly appreciated!

Hi Beth Shapeero,

Method 1: For DNS server follow the below steps and check for any errors listed in event viewer–

1.      Click Start. Type cmd in the Start Search box, and then press ENTER. 

2.      At the command prompt, type the following command, and then press ENTER:

ipconfig /flushdns (there is a space between ipconfig and / )

It will show the message successfully flushed the DNS resolver cache.

3.      At the command prompt, type the following command, and then press ENTER:

ipconfig /registerdns (there is a space between ipconfig and / )

4.      At the command prompt, type the following command, and then press ENTER:

ipconfig /all (there is a space between ipconfig and /)

The ipconfig /all command displays Windows TCP/IP settings for all your network adapters.

If your IP address for your Local Area Connection is either 0.0.0.0 or 169.x.x.x (where x is any number), then your computer is not getting an IP address from the router. 

If that is the case, try this:

·         ipconfig /release in the command prompt and press ENTER

·         ipconfig /renew in the command prompt and press ENTER

Test it again by typing ipconfig /all to see what the address is?  (If you are on a home router, it should start with either 192.168.1.x or 192.168.0.x or 10.x.x.x)

Method 2: If the issue persists you may refer and use the steps provided below and as mentioned in the provided link -

1. Click on Start and then Control Panel.
2. Go to Networking and sharing center and then click on Change adapter settings.
3. Right click on Local Area Connection and choose properties.
4. Highlight Internet Protocol Version 6 and click on Properties.
5. Choose Obtain DNS servers address automatically and press Ok.
6. Choose Obtain IP address automatically.
7. Repeat the steps for Internet Protocol version 4 as well.

http://social.answers.microsoft.com/Forums/en-US/w7network/thread/2e81fca4-35bb-4af9-86a1-7326d2fe91b3

Hope this helps. Let us know the results.

Thanks,

Meghmala – Microsoft Support

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