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Working LAN but no internet connection on a laptop; broken wireless connection

Discussion in 'Networking' started by Bolvarus, Oct 9, 2011.

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  1. Bolvarus

    Bolvarus Thread Starter

    Joined:
    Oct 9, 2011
    Messages:
    1
    Hi there, im new to the forums and i've got a problem that's been a real pain for me lately.
    I've got a wireless connection in my house going through a Linksys WRT54GC router and also a wired connection with Cisco gateway (only 1 laptop uses it). About 1 month ago some strange things began to happen with the wireless connection, my PC seems not to be able to connect unless I reinstall the protocols and it's really annoying to do that every time I run my PC. Also, the wired connection stopped working (probably because of cable being broken) but it requires a router restart 90% of the time when I want to connect the laptop (that used to connect through cable) to the wireless network. The 2nd laptop has an issue mentioned in the title, the LAN works but it can't connect to the Internet through the router. Ipconfig /all shows that DHCP isn't working, there's no default gateway and DNS seems to be wrong. Could that all be related to router not being updated for a long time? I tried reinstalling drivers, unistalling and installing back network card and doing most of the things mentioned in similar threads but nothing seems to work. I know it all looks very silly but I can't do anything about it, at least now - I don't have access to any router settings and can't update it.
    Every bit of help is appreciated. I can paste all the information needed from all computers.
    Operating systems are: Windows 7 on PC and the 1st laptop, 2nd laptop is Vista
     
  2. etaf

    etaf Wayne Moderator

    Joined:
    Oct 2, 2003
    Messages:
    63,350
    can we see the ipconfig /all and an xirrus screen shot

    ------------------------------------------------------------------------
    ipconfig /all
    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 results here

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

    Hold the Windows key and press R, then 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:

    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 to notepad and then automatically open notepad.

    Now all you need to do is copy and paste those results to a reply here
    to do that:
    From the notepad menu - choose Edit - Select all
    all the text will be highlighted
    Next
    From the notepad menu - choose Edit - Copy
    Now go back to the forum - reply and then right click in the reply box and paste
    ------------------------------------------------------------------------

    ------------------------------------------------------------------------
    Run Xirrus Wi-Fi Inspector
    Download and install

    If you cannot access the internet with this PC, then you will need to copy the program across to the faulty PC

    http://www.xirrus.com/Products/Wi-Fi-Inspector.aspx
    Direct link to the program is here http://wpc.475a.edgecastcdn.net/00475A/XirrusWiFiInspectorSetup.1.2.0.exe

    {If the above link does not work heres another link http://www.pcworld.com/downloads/file_download/fid,77196-order,4/download.html}

    Then run and install the program - on a wireless enabled PC/Laptop
    if you get an error - You need NET Framework installed for the WiFi Inspector to function.

    Run the program

    A user guide is available here http://www.xirrus.com/Products/Wi-Fi-Inspector/xirruswifiinspectorguide1-2-0.aspx

    post a screen shot of the program running - if there are a lot of networks showing can you click on "networks" top lefthand area - so we can see all the network information, and also post which network "Adapter Name" (1st column) is yours on the list

    To post a screen shot of the active window, hold the Alt key and press the PrtScn key. Open the Windows PAINT application and Paste the screen shot. You can then use PAINT to trim to suit, and save it as a JPG format file.
    To upload it to the forum, open the full reply window and use the Manage Attachments button to upload it here.
    Full details are here http://library.techguy.org/wiki/TSG_Posting_a_Screenshot

    Note:
    For a reliable (or robust as the Xirrus user guide says) wireless connection you need a signal of about -70 dBm or better.

    If you are using the Mac OS then use http://www.istumbler.net/
    ------------------------------------------------------------------------
     
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