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Wireless card won't detect wireless network

Discussion in 'Networking' started by Dibone, Sep 24, 2010.

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  1. Dibone

    Dibone Thread Starter

    Joined:
    Sep 24, 2010
    Messages:
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    Hello all. I came across this website and forum through searching for this problem. I've come across similar problems but they all either end with the person taking their computer to a shop or it goes unsolved.

    Here is the issue:
    My computer (Dell Vostro 1500 with Windows XP) will not detect the wireless network we have here at home. The wireless card is an Intel Pro Wireless 3945ABG. The laptop has a light that shows if WiFi is on or not. Whenever I turn on the laptop, the light is usually on but not detecting any wireless network (either ours or someone else's).

    -This started happening about three weeks ago. There was no damage to the computer. I reformatted the laptop and reinstalled all the drivers but the problem persisted.
    -Turns out one of our cats had thrown up on the router we had at the time so I figured that was the problem and waited until we got another one.
    -The new one came yesterday and everything was working fine. A couple hours later the problem resurfaced.

    I rolled back the driver thinking maybe that was the issue but apparently it wasn't. I tried uninstalling the wireless card and reinstalling. The only thing that accomplished was deleting the profile I had on there. I've tried the simple repair option but that hasn't worked.

    I know the router is broadcasting a signal because everyone else in the house is getting the connection.

    Here is what is displayed when I do the IPCONFIG/ALL in CMD:

    Microsoft Windows XP [Version 5.1.2600]
    (C) Copyright 1985-2001 Microsoft Corp.

    C:\Documents and Settings\ChrisAdmin>IPCONFIG/ALL

    Windows IP Configuration

    Host Name . . . . . . . . . . . . : chris
    Primary Dns Suffix . . . . . . . :
    Node Type . . . . . . . . . . . . : Unknown
    IP Routing Enabled. . . . . . . . : No
    WINS Proxy Enabled. . . . . . . . : No
    DNS Suffix Search List. . . . . . : domain.actdsltmp

    Ethernet adapter Local Area Connection 3:

    Connection-specific DNS Suffix . : domain.actdsltmp
    Description . . . . . . . . . . . : Broadcom 440x 10/100 Integrated Cont
    roller
    Physical Address. . . . . . . . . : 00-1D-09-B8-38-A7
    Dhcp Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes
    IP Address. . . . . . . . . . . . : 192.168.0.4
    Subnet Mask . . . . . . . . . . . : 255.255.255.0
    Default Gateway . . . . . . . . . : 192.168.0.1
    DHCP Server . . . . . . . . . . . : 192.168.0.1
    DNS Servers . . . . . . . . . . . : 192.168.0.1
    205.171.3.25
    Lease Obtained. . . . . . . . . . : Friday, September 24, 2010 7:19:16 P
    M
    Lease Expires . . . . . . . . . . : Saturday, September 25, 2010 7:19:16
    PM

    Ethernet adapter Wireless Network Connection 4:

    Media State . . . . . . . . . . . : Media disconnected
    Description . . . . . . . . . . . : Intel(R) PRO/Wireless 3945ABG Networ
    k Connection
    Physical Address. . . . . . . . . : 00-1C-BF-81-A6-5C

    Thanks in advance! Right now I'm connected via ethernet.


    Here is some additional information:
    -Devices listed under Network adapters include 1394 Net Adapter, Broadcom 440x 10/100 Integrated Controller, and the Intel adapter I mentioned earlier (Intel Pro Wireless 3945ABG Network Connection)
    -No devices under Network adapters have a red x displayed
    -No devices in the Device Manager display a yellow ? or !
     
  2. etaf

    etaf Wayne Moderator

    Joined:
    Oct 2, 2003
    Messages:
    55,934
    would you post back xirrus

    ------------------------------------------------------------------------
    {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/library/wifitools.php
    Then run the program
    if you get an error - You need NET Framework installed for the WiFi Inspector to function.

    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.
    ------------------------------------------------------------------------
     
  3. Dibone

    Dibone Thread Starter

    Joined:
    Sep 24, 2010
    Messages:
    4
    I installed the Xirrus program but its showing me that no adapters are available All the wireless information says N/A. Its as if the adapters aren't even installed, but I know they are. For instance, for some strange reason it allowed me connect wirelessly this morning for about 30 minutes before it stopped working again.
     
  4. JohnWill

    JohnWill Retired Moderator

    Joined:
    Oct 19, 2002
    Messages:
    106,409
    Hold the Windows key and press R, then type devmgmt.msc

    Please respond to all the following steps.

    1. Under Network adapters, please tell me all the devices listed.
    2. Are there any devices under Network adapters that have a red x displayed?
    3. Also, are there any devices anywhere in the Device Manager display with yellow ? or ! displayed?

    It would be best if you could post a screen shot of Device Manager with the Network adapters and Other devices sections expanded.

    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.




    Let's see this as well.




    Hold the Windows key and press R, then type CMD then press Enter to open a command prompt:

    In the command prompt window that opens, type 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

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

    If you are on a machine with no network connection, use a floppy, USB disk, or a CD-RW disk to transfer a text file with the information to allow pasting it here.
     
  5. Dibone

    Dibone Thread Starter

    Joined:
    Sep 24, 2010
    Messages:
    4
    Attached should be a screenshot of the device manager. The devices under Network adapters are:

    1394 Net Adapter
    Broadcom 440x 10/100 Integrated Controller
    Intel(R) PRO/Wireless 3945ABG Network Connection.

    There is one device with a red x which is part of my printer. It is under Imagining Devices: Canon MX700 ser Network.

    I did the IPCONFIG /ALL for the first post and received what is mentioned there, but I did it again and it gave me this:

    The earlier one in the first post was this:

    I also ran Xirrus three more times. The second time it showed the Intel wireless adapter near the top but not near the center of the interface (if that makes sense). The other times it said there were no devices detected. It also keeps freezing up on me, I don't know if that has to do with it still trying to find an adapter or not.

    Most of the time the light is off on the side of the laptop that shows WiFi is enabled (which means its disabled). When its on and supposedly enabled, it still won't detect a wireless network.
     

    Attached Files:

  6. JohnWill

    JohnWill Retired Moderator

    Joined:
    Oct 19, 2002
    Messages:
    106,409
    Sounds like you either have a dying wireless adapter or a system that is unstable.
     
  7. Dibone

    Dibone Thread Starter

    Joined:
    Sep 24, 2010
    Messages:
    4
    That's what I was thinking too. I bought the laptop back in January 2008 so I guess its time. I decided to buy a USB wireless adapter, was that a bad move you think?

    Same one seen here
     
  8. JohnWill

    JohnWill Retired Moderator

    Joined:
    Oct 19, 2002
    Messages:
    106,409
    Well, it'll certainly allow you to determine if the adapter is the issue. :)
     
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