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My laptop won't detect wireless networks.

Discussion in 'Networking' started by UnseenDane, Jun 28, 2012.

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  1. UnseenDane

    UnseenDane Thread Starter

    Joined:
    Jun 28, 2012
    Messages:
    2
    So about a week ago my computer stopped picking up wifi signals even though I know they're active. I can connect to the internet using an ethernet cable, but my computer doesn't even detect the wireless internet that any device puts out. Could you please help me?
     
  2. etaf

    etaf Wayne Moderator

    Joined:
    Oct 2, 2003
    Messages:
    55,943
    can we see a device manager screen shot and a xirrus screen shot

    you can do this while connected by cable and then post the results

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


    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/
    ------------------------------------------------------------------------
    ------------------------------------------------------------------------
    Device Manager
    Post back the results in device manager
    If you cannot access the internet with this PC, then you will need to copy the program across to the faulty PC
    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.

    how to access device manager for different windows versions
    http://www.computerhope.com/issues/ch000833.htm

    windows key and pause Key should open to allow device manager to be seen,
    on a laptop you may need to use windows key + FN key + Pause Key

    if this does not work then

    Windows 7 or Vista
    Click on the Start Orb
    In the Start Search box type
    device manager and then press enter

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

    Start > control Panel {Vista set to classic view}> system > {Vista, device manager on left hand side} {XP hardware Tab, device manager button} >
    windows 7
    start > control panel> System and Security> Device Manager


    network adaptors, click on the + > post back the devices listed there
    are there any ! ? or X


    post a screen shot of the device manager - network adapters

    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
    ------------------------------------------------------------------------
     
  3. TerryNet

    TerryNet Terry Moderator

    Joined:
    Mar 23, 2005
    Messages:
    69,558
    If you are trying to use a laptop's integrated wireless adapter is it switched on?

    If an external wireless adapter does it have a LED to indicate that it has power?
     
  4. UnseenDane

    UnseenDane Thread Starter

    Joined:
    Jun 28, 2012
    Messages:
    2
    It's external and I think it's working it's LED lights up orange no matter what position it's in. I have it switched to the on position so I don't think that's the problem.
     
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