DNS lookup failed

By Daisha M
Oct 14, 2012
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  1. Hello,

    I recently purchased a new laptop, a Dell Model#N5050 Windows 7 home premium. It's been about a week that I have been attempting to access the web. I have successfully set up the wireless network (I just added the existing network I have set up through my old laptop) My task bar shows that I am connected to the internet using google chrome, I receive the error message "the DNS lookup failed." And while using internet explorer I get, "The DNS server isn't responding." All of my Wireless Network Connection Properties are set to obtain automatically, I've even tried disabling the IPV6. I know all these settings are correct, because my old laptop is still connected and I am having no difficulty connecting to the internet.

    I consider myself to be fairly computer savvy, and this has left me puzzled and extremely frustrated. Any help would be greatly appreciated!

    This might be helpful- results from ipconfig from Dell not connecting to internet:

    Windows IP Configuration

    Host Name . . . . . . . . . . . . : Daisha-PC
    Primary Dns Suffix . . . . . . . :
    Node Type . . . . . . . . . . . . : Hybrid
    IP Routing Enabled. . . . . . . . : No
    WINS Proxy Enabled. . . . . . . . : No

    Wireless LAN adapter Wireless Network Connection:

    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Dell Wireless 1701 802.11b/g/n
    Physical Address. . . . . . . . . : 64-27-37-F2-85-05
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes
    IPv4 Address. . . . . . . . . . . : 192.168.0.12(Preferred)
    Subnet Mask . . . . . . . . . . . : 255.255.255.0
    Lease Obtained. . . . . . . . . . : Sunday, October 14, 2012 3:23:34 PM
    Lease Expires . . . . . . . . . . : Sunday, October 14, 2012 5:42:06 PM
    Default Gateway . . . . . . . . . : 192.168.0.1
    DHCP Server . . . . . . . . . . . : 192.168.0.1
    DNS Servers . . . . . . . . . . . : 8.8.8.8
    8.8.4.4
    NetBIOS over Tcpip. . . . . . . . : Enabled

    Ethernet adapter Local Area Connection:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Realtek PCIe FE Family Controller
    Physical Address. . . . . . . . . : 24-B6-FD-5A-36-94
    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. . . . . . . . . : 64-27-37-F2-85-06
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes

    Tunnel adapter 6TO4 Adapter:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Microsoft 6to4 Adapter
    Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes

    Tunnel adapter isatap.{55243497-031E-4337-95FC-B7102046BF08}:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Microsoft ISATAP Adapter #3
    Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes

    Tunnel adapter isatap.{3FAF375A-4DA6-4CAA-9571-D003DEA9B2D5}:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Microsoft ISATAP Adapter #4
    Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes

    Tunnel adapter Teredo Tunneling Pseudo-Interface:

    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
    IPv6 Address. . . . . . . . . . . : 2001:0:4137:9e76:1c37:2ebe:3f57:fff3(Preferred)
    Link-local IPv6 Address . . . . . : fe80::1c37:2ebe:3f57:fff3%16(Preferred)
    Default Gateway . . . . . . . . . : ::
    NetBIOS over Tcpip. . . . . . . . : Disabled
    Data from Dell computer that will connect:
    Windows IP Configuration
    Host Name . . . . . . . . . . . . : Daisha-PC
    Primary Dns Suffix . . . . . . . :
    Node Type . . . . . . . . . . . . : Hybrid
    IP Routing Enabled. . . . . . . . : No
    WINS Proxy Enabled. . . . . . . . : No
    Wireless LAN adapter Wireless Network Connection:
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Dell Wireless 1701 802.11b/g/n
    Physical Address. . . . . . . . . : 64-27-37-F2-85-05
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes
    IPv4 Address. . . . . . . . . . . : 192.168.0.12(Preferred)
    Subnet Mask . . . . . . . . . . . : 255.255.255.0
    Lease Obtained. . . . . . . . . . : Sunday, October 14, 2012 3:23:34 PM
    Lease Expires . . . . . . . . . . : Sunday, October 14, 2012 5:42:06 PM
    Default Gateway . . . . . . . . . : 192.168.0.1
    DHCP Server . . . . . . . . . . . : 192.168.0.1
    DNS Servers . . . . . . . . . . . : 8.8.8.8
    8.8.4.4
    NetBIOS over Tcpip. . . . . . . . : Enabled
    Ethernet adapter Local Area Connection:
    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Realtek PCIe FE Family Controller
    Physical Address. . . . . . . . . : 24-B6-FD-5A-36-94
    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. . . . . . . . . : 64-27-37-F2-85-06
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes
    Tunnel adapter 6TO4 Adapter:
    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Microsoft 6to4 Adapter
    Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes
    Tunnel adapter isatap.{55243497-031E-4337-95FC-B7102046BF08}:
    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Microsoft ISATAP Adapter #3
    Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes
    Tunnel adapter isatap.{3FAF375A-4DA6-4CAA-9571-D003DEA9B2D5}:
    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Microsoft ISATAP Adapter #4
    Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes
    Tunnel adapter Teredo Tunneling Pseudo-Interface:
    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
    IPv6 Address. . . . . . . . . . . : 2001:0:4137:9e76:1c37:2ebe:3f57:fff3(Preferred)
    Link-local IPv6 Address . . . . . : fe80::1c37:2ebe:3f57:fff3%16(Preferred)
    Default Gateway . . . . . . . . . : ::
    NetBIOS over Tcpip. . . . . . . . : Disabled
  2. jobeard

    jobeard TS Ambassador Posts: 13,275   +280

    Is this WiFi to your own router, or some public hotspot?
    These look really good:
    Code:
    Host Name . . . . . . . . . . . . : Daisha-PC
    Primary Dns Suffix . . . . . . . :
    Node Type . . . . . . . . . . . . : [B]Hybrid[/B]
    IP Routing Enabled. . . . . . . . : No
    WINS Proxy Enabled. . . . . . . . : No
     
    Wireless LAN adapter Wireless Network Connection:
     
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Dell Wireless 1701 802.11b/g/n
    Physical Address. . . . . . . . . : 64-27-37-F2-85-05
    DHCP Enabled. . . . . . . . . . . : [B]Yes[/B]
    Autoconfiguration Enabled . . . . : Yes
    [COLOR=#ff0000]IPv4 Address.[/COLOR] . . . . . . . . . . : [B]192.168.0.12(Preferred)[/B]
    Subnet Mask . . . . . . . . . . . : 255.255.255.0
    Lease Obtained. . . . . . . . . . : Sunday, October 14, 2012 3:23:34 PM
    Lease Expires . . . . . . . . . . : Sunday, October 14, 2012 5:42:06 PM
    Default Gateway . . . . . . . . . : 192.168.0.1
    DHCP Server . . . . . . . . . . . : 192.168.0.1
    [B]DNS Servers . . . . . . . . . . . : 8.8.8.8[/B]
    [B]8.8.4.4[/B]
    [B]NetBIOS over Tcpip. . . . . . . . : Enabled[/B]
    In Services, ensure DNS Client is Autostart and running.


    These are the test you can run; get a command prompt, then
    verify NIC is active ping 127.0.0.1
    get your IPv4 Address and then ping it
    run tracert 8.8.8.8
    • first line will be your router/gateway
    • second will be your ISP
    • ... last should be 8.8.8.8
    now test DNS with
    • nslookup 8.8.8.8
    should return google=public-dns-a.google.com

  3. Daisha M

    Daisha M Newcomer, in training Topic Starter

    Thank you for the quick reply! I pinged 127.0.0.1: Packets sent=4, Packets received=4, Lost=0 I'm not sure how to execute your second instructions (get yout IPV4 address and run tracert) When I ran the nslookup 8.8.8.8, it did return your predicted answer.
  4. jobeard

    jobeard TS Ambassador Posts: 13,275   +280

    Great.
    That says your DNS IS WORKING, so if you have issues finding webpages, the suspect is the browser,
    an add-on, or a proxy that you might be using.
  5. Daisha M

    Daisha M Newcomer, in training Topic Starter

    This laptop is brand new from best buy, I haven't applied any proxy settings, and I have triple checked the settings on my browser that the Lan settings are are set to automatically configure, and the proxy server box is unchecked. I'm having this issue google chrome, and explorer. I haven't had a chance to try mozilla because I cannot connect reliably to the internet to download it... My connection is spotty, one minute I have a connection, the next it's gone, and I get that annoying yellow triangle with the exclamation mark over my wireless signal in my task bar..then it's gone again.
  6. AminRoy

    AminRoy Newcomer, in training

    I am having the same problem with my Google Chrome, but only Google Chrome browser. not affected my IE n MFF I think. I had my proxy changed to a free proxy provider via Mozila FF the last time. but never via my Google Chrome. the same Google acc with different PC. With this PC I never change my proxy. but there's the problem. what with this Google Chrome holes. it just gonna be fine when I format my PC without login into my google acc. just after login in the problem comes again. my housemate PC browsing Google Chrome just fine from the same access point. pinging the DNS and all was just fine. Come on Google. Fix it
  7. jobeard

    jobeard TS Ambassador Posts: 13,275   +280

    @AminRoy: You would get better responses if you posted your issues in a thread that you create :)
  8. jobeard

    jobeard TS Ambassador Posts: 13,275   +280

    Now THAT's a problem and certainly will impact reliability. IMO, you need this fixed first. This is a driver problem.
    [QUOTEsystem is: ]Dell Model#N5050 Windows 7 [/QUOTE]boy, that's close to my #5040 7/pro 64bit
    Suggest you access dell.com and ensure your wifi device driver is the latest one
    (do not use the Microsoft Update versions)
  9. AminRoy

    AminRoy Newcomer, in training

    Nop. just interested in the way you analyzed and diagnosed a PC problem. who knows
  10. Daisha M

    Daisha M Newcomer, in training Topic Starter

    That is definitely a start...I've logged on to Dell, and searched "wifi device driver" with no luck...can you point me in the right direction? I greatly appreciate your help thus far!
  11. Daisha M

    Daisha M Newcomer, in training Topic Starter

    Update: I logged onto Dell, and updated about 90% of the recommended updates, some looked unnecessary (audio updates, etc) I haven't seen the "annoying yellow triangle" since I've installed the updates.. Most were modem updates, I didn't see anything for wifi specifically, but I still downloaded them and rebooted...Still have the DNS issue. I can load a page (sometimes) if I reload it several times, but usually only the plain text comes through, pictures, photos, etc are missing...
     
  12. jobeard

    jobeard TS Ambassador Posts: 13,275   +280

    Hmm; The DNS will only translate the domain name (eg: techspot.com )
    portion of a URL
    Code:
    http://www.techspot.com/community/topics/dns-lookup-failed.186215/#post-1242177
    into the IP address (50.22.252.218) so the browser can open the socket,
    bind it to port 80 and then issue a
    Code:
    GET /community/topics/dns-lookup-failed.186215/#post-1242177 HTTP/1.1
    Whatever happens after the GET is up to the browser showing the results given by the web server.

    So if you ONLY see text and no JPG, PNG, GIF graphics, it's your browser or your system configuration
  13. Byresh

    Byresh Newcomer, in training

    This issue comes up if the DNS server address is referring to unknown IP in IPv4 and IPv6 properties. we can get rid of this by checking "obtain an IPv4/IPv6 address automatically" in network properties.
  14. jobeard

    jobeard TS Ambassador Posts: 13,275   +280

    If the DNS value is missing or invalid (ie unknown), then the browser would not be able to access TXT files (in fact anything).
  15. kumar

    kumar Newcomer, in training

    Hai sister,

    I saw your laptop connectivity problem , please check that WINDOWS FIREWALL is Enabled and if means please switch off it and there is a exceptions in that, switch off that also and PUT a WINDOWS UPDATE and RESTART Your Laptop, please try it , According my knowledge hereby I post this Comment , if there is any wrong in my comment means iam sorry....
  16. jobeard

    jobeard TS Ambassador Posts: 13,275   +280

    Btw: if you get a command prompt and enter PING GOOGLE.COM and see this:
    Code:
    C:\Users\Jeff>ping google.com
     
    Pinging google.com [74.125.224.160] with 32 bytes of data:
    Reply from 74.125.224.160: bytes=32 time=12ms TTL=54
    Reply from 74.125.224.160: bytes=32 time=13ms TTL=54
    Reply from 74.125.224.160: bytes=32 time=14ms TTL=54
    Reply from 74.125.224.160: bytes=32 time=13ms TTL=54
     
    Ping statistics for 74.125.224.160:
        Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
    Approximate round trip times in milli-seconds:
        Minimum = 12ms, Maximum = 14ms, Average = 13ms
    then your DNS is just fine :)


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