DNS server not responding

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arcs

Thread Starter
Joined
Jan 29, 2015
Messages
15
My Dell laptop is connected to the Internet through a broadband modem. But when I'm browsing the internet, the webpages are not opening in any of the browsers. Moreover, the network icon on the taskbar shows an exclamation sign with it. I tried to troubshoot the problem, it detected:
"DNS SERVER NOT RESPONDING".
How do I solve this problem?
I'm using windows 8 in my lappy.
 

etaf

Wayne
Moderator
Joined
Oct 2, 2003
Messages
65,474
Is this the only PC that disconnects - do other devices connected work OK - if so how are they connected to the router - wireless or wired

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, kaspersky or Mcafee or any free security suites like zonealarm, AVG , Webroot etc

Please post back here the make and exact model of the router and if you have a separate modem, the make and exact model of the modem.

Please make a note of the status of the lights on the modem and on the router when working normally - post that light status here.

------------------------------------------------------------------------
ipconfig /all

We would like to see the results from an ipconfig /all - post back the results in a reply here.

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.

If you do not have another PC - do you have a phone connected to the internet - can you photograph the result and post the image in a reply
Note: you will see entries named Tunnel adapter Teredo Tunneling Pseudo-Interface: we dont need to see that information - JUST the information above those entries

For Windows 8
To open a Cmd Prompt or an Administrator Cmd prompt from the Desktop.
http://www.bleepingcomputer.com/tutorials/open-an-elevated-command-prompt-in-windows-8/
Use Win + X and choose Command Prompt or Command Prompt (Admin) from the list.​

For windows version, XP, Vista, W7
Hold the Windows key and press R

Now type CMD

Now press Enter to open a command prompt box (A new dialogue box - black with white font, will appear on screen ):​

In the command prompt window that opens, type the following command:

Note that there is a space before the /ALL, but there is NOT a space after the / in the following command.

ipconfig /all > network.txt & network.txt

It will export the results into notepad and then automatically open the notepad and display on your screen.

Now all you need to do is copy and paste those results into a reply here
to do that:
From the notepad menu - choose Edit - Select all
all the text will now be highlighted
Next
From the notepad menu - choose Edit - Copy

Now go back to the forum - goto the reply and then right click in the reply box and paste the results.
The results from the notepad should now appear in the forum reply.
------------------------------------------------------------------------
 

arcs

Thread Starter
Joined
Jan 29, 2015
Messages
15
Sorry but I dont have any other PC, so I cant tell whether its working on other device or not.
Right now I'm only using windows defender but earlier I had McAfee.
Modem: UT STARCOM (Data one broadband)
I've a BSNL broadband connection.

Lights working:
1) Power
2) DSL
3) Ethernet

Command prompt results:


Windows IP Configuration

Host Name . . . . . . . . . . . . : Sujan
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Mixed
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Wireless LAN adapter Local Area Connection* 14:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Hosted Network Virtual Adapter
Physical Address. . . . . . . . . : 5E-85-56-45-B1-2D
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Ethernet adapter Bluetooth Network Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Bluetooth Device (Personal Area Network)
Physical Address. . . . . . . . . : BC-85-56-45-B1-2E
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Wireless LAN adapter Local Area Connection* 12:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Wi-Fi Direct Virtual Adapter
Physical Address. . . . . . . . . : 1E-85-56-45-B1-2D
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Ethernet adapter Ethernet:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Realtek PCIe FE Family Controller
Physical Address. . . . . . . . . : 74-86-7A-22-AA-71
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::ec22:32dd:e838:3b67%13(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.1.2(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Thursday, January 29, 2015 7:32:06 PM
Lease Expires . . . . . . . . . . : Friday, January 30, 2015 7:32:06 PM
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DHCPv6 IAID . . . . . . . . . . . : 359958138
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-19-68-AA-43-BC-85-56-45-B1-2D
DNS Servers . . . . . . . . . . . : 192.168.1.1
192.168.1.1
NetBIOS over Tcpip. . . . . . . . : Enabled

Wireless LAN adapter Wi-Fi:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Dell Wireless 1705 802.11b/g/n (2.4GHZ)
Physical Address. . . . . . . . . : BC-85-56-45-B1-2D
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
 

etaf

Wayne
Moderator
Joined
Oct 2, 2003
Messages
65,474
Are there any other lights on the device ? - you say the ones that are on and working
which ones are OFF

looks like you are getting a valid IP =

Mcafee maybe the issue here - which we can deal with later
But first
lets goto the next step

------------------------------------------------------------------------
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.

If you do not have another PC - do you have a phone connected to the internet - can you photograph the result and post the image in a reply

For Windows 8
To open a Cmd Prompt or an Administrator Cmd prompt from the Desktop. Use Win + X and choose Command Prompt or Command Prompt (Admin) from the list.​

For windows version, XP, Vista, W7
Hold the Windows key and press R

Now type CMD

then press Enter to open a command prompt box (A new dialogue box - black with white font, will appear on screen ):​

In the command prompt window that opens

Type the following command
Ping 192.168.1.1
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 98.139.183.24
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.



if you see on the results a
"general Failure"
PING: transmit failed. General failure.
This sometimes means a firewall issue
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, kaspersky or Mcafee or any free security suites like zonealarm, AVG , Webroot etc


------------------------------------------------------------------------
 

arcs

Thread Starter
Joined
Jan 29, 2015
Messages
15
Sorry but above results were not copied fully.
Full results:


Windows IP Configuration

Host Name . . . . . . . . . . . . : Sujan
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Mixed
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Wireless LAN adapter Local Area Connection* 14:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Hosted Network Virtual Adapter
Physical Address. . . . . . . . . : 5E-85-56-45-B1-2D
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Ethernet adapter Bluetooth Network Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Bluetooth Device (Personal Area Network)
Physical Address. . . . . . . . . : BC-85-56-45-B1-2E
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Wireless LAN adapter Local Area Connection* 12:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Wi-Fi Direct Virtual Adapter
Physical Address. . . . . . . . . : 1E-85-56-45-B1-2D
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Ethernet adapter Ethernet:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Realtek PCIe FE Family Controller
Physical Address. . . . . . . . . : 74-86-7A-22-AA-71
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Wireless LAN adapter Wi-Fi:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Dell Wireless 1705 802.11b/g/n (2.4GHZ)
Physical Address. . . . . . . . . : BC-85-56-45-B1-2D
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::3028:df86:c1bb:3321%12(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.43.221(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Thursday, January 29, 2015 7:37:42 PM
Lease Expires . . . . . . . . . . : Thursday, January 29, 2015 8:45:54 PM
Default Gateway . . . . . . . . . : 192.168.43.1
DHCP Server . . . . . . . . . . . : 192.168.43.1
DHCPv6 IAID . . . . . . . . . . . : 264013142
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-19-68-AA-43-BC-85-56-45-B1-2D
DNS Servers . . . . . . . . . . . : 192.168.43.1
NetBIOS over Tcpip. . . . . . . . : Enabled
 

arcs

Thread Starter
Joined
Jan 29, 2015
Messages
15
Lights
1) Power (working)
2) DSL (working)
3) Internet
4) Ethernet (working)
5) USB
 

etaf

Wayne
Moderator
Joined
Oct 2, 2003
Messages
65,474
the internet light should be lite
thats when the modem logs into your ISP and connects to the internet
so i suspect thats the issue

turn off the modem for about 5minutes
then switch on again

the power light should come on
then the DSL light should flash and go solid
then the internet light should come on - flash and then maybe go solid or continue to flash - BUT it should be ON and NOT completely off
 

arcs

Thread Starter
Joined
Jan 29, 2015
Messages
15
Pinging 192.168.1.1 with 32 bytes of data:
Reply from 192.168.1.1: bytes=32 time<1ms TTL=64
Reply from 192.168.1.1: bytes=32 time<1ms TTL=64
Reply from 192.168.1.1: bytes=32 time<1ms TTL=64
Reply from 192.168.1.1: bytes=32 time<1ms TTL=64

Ping statistics for 192.168.1.1:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms




Pinging google.com [74.125.236.35] with 32 bytes of data:
Request timed out.
Request timed out.
Request timed out.
Request timed out.

Ping statistics for 74.125.236.35:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),





Pinging 92.139.183.24 with 32 bytes of data:
Request timed out.
Request timed out.
Request timed out.
Request timed out.

Ping statistics for 92.139.183.24:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
 

arcs

Thread Starter
Joined
Jan 29, 2015
Messages
15
Earlier when the Internet used to work good, then the Internet light worked.
The problem came around 3-4 days back.
Since then the light is not working.
But then also i tried many times to switch the modem on/off for 5 or more minutes. But still, same issue...
 

arcs

Thread Starter
Joined
Jan 29, 2015
Messages
15
I tried it again.
Switched OFF the modem. Then after 10 minutes, turned it ON.
The power light and DSL light worked accordingly.
But still, the Internet light is OFF
 

etaf

Wayne
Moderator
Joined
Oct 2, 2003
Messages
65,474
i would contact your ISP and talk to them about the problem - it maybe a fault on the line or a faulty modem
they should be able to test that connection and tell you what needs to be done
 

arcs

Thread Starter
Joined
Jan 29, 2015
Messages
15
I have already contacted them but came out with no solution.
But they told that there is a problem with your PC....
So I contacted you....
 

arcs

Thread Starter
Joined
Jan 29, 2015
Messages
15
I'll contact them again and let you know about it... :)
Thanks anyways...
 

etaf

Wayne
Moderator
Joined
Oct 2, 2003
Messages
65,474
No problem with the PC _ if the modem internet light is OFF its a problem with the Modem or the Line to the ISP
call them again and tell them that the modem light is OFF
 
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