Upgraded Dell 9400 with Intel 3945 Dual Band Wireless failure

Discussion in 'Windows Vista Networking' started by mmattner, Feb 7, 2007.

  1. mmattner

    mmattner Guest


    I've recently upgraded my Inspiron 9400 laptop containing a "Intel
    PRO/Wireless 3945 Dual Band 802.11a/g" wireless card to Vista Home Premium.

    I have now found that wireless has become VERY flakey - only occassionally
    when I boot up does a wireless network get detected even though a second
    laptop in my home is picking my home network up.

    On the occasions when the network is detected it is described as having an
    excellent signal and all works well. But for the 9 out of 10 times that the
    network is not detected I am forced to used an ethernet cable. I have updated
    to the latest driver on the dell site, even tried a later Intel version all
    to no effect.

    As far as I can tell I have ruled out the router (A Billion 7400G) as it was
    working perfectly (100% success under XP) and still working with other laptop.

    The flakeyness is what is throwing me as I cant put my finger on any
    possible cause.

    Anyone else had similar issues with this (or similar) configuration.

    The following is an extract from my event log which seems to relate to the

    Helper Class (AutoConfig Helper Class) Event:

    Wireless Diagnostic Helper Class Event

    For complete information about this session see the Wireless Diagnostic
    Informational Event.

    Helper Class: Auto Configuration
    Initialize status: Success

    Information for connection being diagnosed
    Interface GUID: 9c1a0b1a-798e-4bc4-902f-ddb38156447c
    Interface name: Intel(R) PRO/Wireless 3945ABG Network Connection
    Interface type: Native WiFi

    Result of diagnosis: Problem found

    Root cause:
    Windows cannot find any wireless networks in range of this computer

    Detailed root cause:
    Windows could not find any wireless networks in range of this computer

    Repair option:
    Click for information on how to find wireless networks in range of this

    Event Verbosity:0
    mmattner, Feb 7, 2007
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  2. mmattner

    mlai Guest

    Try changing the channel on your ap.....
    mlai, Feb 7, 2007
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  3. mmattner

    mmattner Guest

    Thanks for the reply - I have tried changing the channel and it seems to have

    Suprisingly the connection seems to work better at a distance from the
    wireless router. On my first attempts I was only about a metre away.
    mmattner, Feb 8, 2007
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