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Solved: DNS Not Responding

3K views 4 replies 2 participants last post by  SKroupa 
#1 ·
mY COMPUTER CANNOT CONNECT TO THE INTERNET. i HAVE THREE OTHER COMPUTERS ALL CONNECTING THROUGH MY 2wIRE AT&t ROUTER WITH NO PROBLEMS. When I use the troubleshooter in Windows 7 I get a message that the DNS Server is not responding. I have changed the ethernet wire from the computer to the router but it is still not working. I have run the ipconfig /all and the following is what is returned:


Windows IP Configuration

Host Name . . . . . . . . . . . . : E521
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Broadcast
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : gateway.2wire.net

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . : gateway.2wire.net
Description . . . . . . . . . . . : Broadcom 440x 10/100 Integrated Controller
Physical Address. . . . . . . . . : 00-1A-A0-0C-69-DF
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::300a:e661:a5b3:c6f5%10(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.1.107(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Sunday, August 26, 2012 6:43:11 PM
Lease Expires . . . . . . . . . . : Monday, August 27, 2012 8:43:45 PM
Default Gateway . . . . . . . . . : 192.168.1.254
DHCP Server . . . . . . . . . . . : 192.168.1.254
DHCPv6 IAID . . . . . . . . . . . : 234887840
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-14-48-23-A2-00-1A-A0-0C-69-DF
DNS Servers . . . . . . . . . . . : 192.168.1.254
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter isatap.gateway.2wire.net:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : gateway.2wire.net
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
 
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#2 ·
make and model of the PC

do you happen to have mcafee security suite on the pc at all - if so have a read here
http://forums.techguy.org/networking/1065830-customers-may-experience-loss-network.html
a recent update by mcafee has caused internet access issues

if you dont have mcafee on the pc at all - (even as a trial)

What firewall / security suite or anti-virus do you currently have on the PC - or you have ever had on the PC in the past - any trial ware - like Norton, Mcafee , AVG etc

then do the following

------------------------------------------------------------------------
Ping Tests
If you cannot access the internet with this PC, then you will need to paste the results into something like notepad and then copy onto a machine that can access the internet and post the results in a reply here.
Save the file to a USB flash drive or other removable media. Plug it into the working computer with internet access and copy the file and paste here.

Start> Run {search bar in Vista/W7}> type CMD to open a command prompt box
(A new dialogue box - black with white font, will appear on screen ):

Type the following command
Ping 192.168.1.254
Post back the results in a reply here
right click in the command prompt box
select all
enter
control key + C key - to copy
then reply here and
control key + V to paste

Type the following command
Ping google.com
Post back the results in a reply here
right click in the command prompt box
select all
enter
control key + C key - to copy
then reply here and
control key + V to paste

Type the following command
Ping 209.183.226.152
Post back the results in a reply here
right click in the command prompt box
select all
enter
control key + C key - to copy
then reply here and
control key + V to paste
For your information only
these tests will check various stages of the connection, the first ping test, ping default gateway checks to see if you still have a connection to the router.
The next two Ping google.com & Ping 209.183.226.152 tests the connection to internet. google is to test by name and the ping test using a number is checking that a connection exists without DNS.
these tests then confirm if there is a dns issue on the connection.

------------------------------------------------------------------------
 
#5 ·
I had the same thing happen on another computer I have connected to my router where the computer could not see the router and could not access the internet. After exhaustive troubleshooting I pinpointed the source of the problem - it was one of the recent updates Microsoft sent out for
Windows 7 64 bit. I have now changed my settings not to allow automatic updates of my system - I have to o.k. them fitrst.
 
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