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Defective Desktop Wireless Card?

Discussion in 'Networking' started by xombifier, Feb 19, 2012.

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  1. xombifier

    xombifier Thread Starter

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    I'm not sure exactly what's going on here. I recently bought a new desktop computer that included a built-in wireless internet card, and set up the computer in my bedroom. The router in our house is downstairs at the other end of the building, a little over 30 feet away, behind a few walls but not much obstruction otherwise. It is a very strong router, and my laptop has a great signal from the same spot in my bedroom, 4 or 5 bars perfect signal. All the other laptops in our family get strong signals as well. Great router, yes. Conversely, the desktop receives a very poor signal, only 2 or 3 bars normally, and webpages take a while to load, some don't even load at all. Download speeds are horrendous, almost always with an average well lower than 100 KB/s.

    The card model is: Rosewill RNX-N150PC Wireless LAN Card

    The router is a Linksys E3200

    I am thinking it must be a problem with the card itself, not the router. I would appreciate it if someone would help me out with this problem, Thanks.
     
  2. etaf

    etaf Wayne Moderator

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    it could be the position and the aerial
    have you checked the aerail is screwed in correctly on the card - sometimes they are separate
    also because desktops are often put in cupboards or low down against floors/walls may be an issue

    lets see an xirrus screen shot from the destop
    ------------------------------------------------------------------------
    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/
    ------------------------------------------------------------------------
     
  3. xombifier

    xombifier Thread Starter

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  4. etaf

    etaf Wayne Moderator

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    interesting its showing up as two adapters on the screen shot -
    the signal is quite a low value - what do you get from a laptop in the same area
     
  5. xombifier

    xombifier Thread Starter

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  6. DoubleHelix

    DoubleHelix Banned

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    The desktop has 2 wireless network adapters: the PCI Rosewill card, and a USB adapter. Unplug the USB adapter.
     
  7. etaf

    etaf Wayne Moderator

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    you may find moving the router / router aerial if it has one a little may make a lot of difference - also did you check the connection
     
  8. xombifier

    xombifier Thread Starter

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    The USB adapter is only to boost the internet because the card is so weak. And connection?
     
  9. xombifier

    xombifier Thread Starter

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  10. etaf

    etaf Wayne Moderator

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    you just have a low signal there - so you will need to try a few things as suggested
     
  11. xombifier

    xombifier Thread Starter

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  12. etaf

    etaf Wayne Moderator

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    this is the connection i mentioned of the aerial
     
  13. xombifier

    xombifier Thread Starter

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  14. etaf

    etaf Wayne Moderator

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  15. xombifier

    xombifier Thread Starter

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    Sorry, I must have posted that last reply two times by accident. Yes, the actual card aerial antenna looks well screwed in. I'm not a computer expert so I am not positive.
     
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