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Weird wireless internet connection

Discussion in 'Networking' started by Dantonyevenever, Nov 4, 2011.

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  1. Dantonyevenever

    Dantonyevenever Thread Starter

    Joined:
    Nov 4, 2011
    Messages:
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    I have a Dell laptop with Win7 Ultimate 64bit at home. Sometime I could access internet via wireless. Sometime I couldn't as it shows "no internet access". The weird thing is: when I turn on my work laptop and logon, my home laptop would have internet access immediately and even then I turn off my work laptop, it still has the internet access. I have checked BIOS/Wireless Card/Router Setting, power plan policy, TCP/IP setting, update to lastest firmware and tried many ways I found from internet. No luck. That's weird.

    Here is my info:
    1. My home Laptop : Dell Inspiron, Win7 Ultimate 64
    Tried Win7 Pro 32, Tried with different internal wireless cards, same results.
    2. Modem/Router: TP-LINK 8840T modem+router, add D-LINK DI-524 as wireless AP(disabled DHCP),
    WPA-PSK/WPA2-PSK (w or/wo broadcast)
    3. My work Laptop: HP Probook, Win7 Enterprise 64.

    Any ideas are very appreciated.
     
  2. VictoriaiiCe

    VictoriaiiCe

    Joined:
    Oct 20, 2011
    Messages:
    684
    Hold the Windows key and press R, then type CMD to open a command prompt. In the command prompt window that opens, type type the following command: IPCONFIG /ALL

    Right click in the command window and choose Select All, then hit Enter to copy the contents to the clipboard then paste the results in a message here.
     
  3. Dantonyevenever

    Dantonyevenever Thread Starter

    Joined:
    Nov 4, 2011
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    Thanks VictoriaiiCe. I will post them when I get home.
     
  4. Dantonyevenever

    Dantonyevenever Thread Starter

    Joined:
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    Messages:
    6
    Here is detail when there is no internet access:

    Windows IP Configuration
    Host Name . . . . . . . . . . . . : Test-PC
    Primary Dns Suffix . . . . . . . :
    Node Type . . . . . . . . . . . . : Broadcast
    IP Routing Enabled. . . . . . . . : No
    WINS Proxy Enabled. . . . . . . . : No
    Wireless LAN adapter Wireless Network Connection :
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Atheros AR9285 Wireless Network Adapter
    Physical Address. . . . . . . . . : 1C-65-9D-42-B5-4C
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes
    IPv4 Address. . . . . . . . . . . : 192.168.1.103(Preferred)
    Subnet Mask . . . . . . . . . . . : 255.255.255.0
    Lease Obtained. . . . . . . . . . : November-04-11 7:17:50 PM
    Lease Expires . . . . . . . . . . : November-07-11 7:27:12 PM
    Default Gateway . . . . . . . . . : 192.168.1.1
    DHCP Server . . . . . . . . . . . : 192.168.1.1
    DNS Servers . . . . . . . . . . . : 8.8.8.8
    8.8.4.4
    NetBIOS over Tcpip. . . . . . . . : Enabled
    Tunnel adapter isatap.{9C895D8B-96A9-40C1-9D8B-86574C652ECD}:
    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Microsoft ISATAP Adapter
    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

    When there is internet access:

    ===========================================================================================
    = IPv6 Address. . . . . . . . . . . : 2001:0:4137:9e76:fc:b4e1:ba59:8552(Preferred) =
    = Link-local IPv6 Address . . . . . : fe80::fc:b4e1:ba59:8552%12(Preferred) =
    = Default Gateway . . . . . . . . . : :: =
    = NetBIOS over Tcpip. . . . . . . . : Disabled =
    ===========================================================================================
     
  5. iRiguez

    iRiguez

    Joined:
    Nov 4, 2011
    Messages:
    51
    A couple of things I would Try.

    1. Roll back your drivers.
    2. Flush your DNS ("ipconfig /flushdns")
    3. Disable UPnP on your router. I have seen Plug and Play mess up wireless configurations with clients I have had in the past.


    Post back with results and I'll try to get back to you as quickly as I can.
     
  6. Dantonyevenever

    Dantonyevenever Thread Starter

    Joined:
    Nov 4, 2011
    Messages:
    6
    Thanks for help.

    Already disabled uPnP in router.
    Sounds like DHCP Client did not work when the laptop had no internet. Tried it when the laptop lost internet connection and after restart the DHCP Client service the internet come back.
     
  7. VictoriaiiCe

    VictoriaiiCe

    Joined:
    Oct 20, 2011
    Messages:
    684
  8. VictoriaiiCe

    VictoriaiiCe

    Joined:
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    684
    hmm..Hope that doesn't keep happening! Glad things are up and running! Let us know if it gives you anymore trouble :)
     
  9. Dantonyevenever

    Dantonyevenever Thread Starter

    Joined:
    Nov 4, 2011
    Messages:
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    Thanks VictoriaiiCe. Now I know the issue is related DHCP Client service. But main reason I still do not know. And why when my another laptop turns on, this one ("Home laptop") would have internet. Sounds like I set parental control on this laptop.
     
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