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Suddenly unable to connect wirelessly with my laptop

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#1 XxJxX1337


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Posted 13 March 2011 - 09:27 PM

Hello, I have enjoyed Comcast's network speeds for a long, long time and recently purchased a new television that warranted the use of my laptop, and Xbox 360 as media servers. I decided after some research to upgrade my internet service to a higher tier and also to purchase a DOCSIS 3.0 modem. The modem of my choice was the Motorola SBG6580 due to several reasons. Among them, slim and modern profile and color scheme, compact design, all-in-one functionality, and, certainly, Motorola's reputation.

I have enjoyed this modem for several weeks when just suddenly a few days ago I found myself unable to obtain a stable connection on the modem via my laptop. I was able to connect for a short while but according to speedtest.net I was enjoying download speeds of 0.50 mbps and very similar numbers for my upload speed. I am now unable to connect with my laptop at all. In fact, sometimes Vista's networking programs will tell me that the modem cannot even be detected or that my password or encryption type is incorrect. I did not change any internet settings when this began. I have a small amount of experience but I am still definitely a novice when it comes to networking. I have done what I could think to do. I have power cycled the modem, restarted the computer, did a hard reset on the modem, deleted all of the saved networking information in the Network and Sharing Center, updated the wireless card driver that I found on the manufacturer's website, and restored my static ip configuration back to automatically obtained. I have also run the configuration disc for the modem several times without any indicated errors. I am at a loss.

Speeds while connected to the modem via ethernet are not unimpressive especially considering a cat5 cable and a regular ethernet port on the laptop.

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I run Windows Vista Service Pack 2 on a bone stock Toshiba Satellite L03-S5955.

Any help would be GREATLY appreciated.

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#2 etaf


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Posted 16 March 2011 - 06:04 AM

lets see an 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
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

Direct link to the program is here http://www.xirrus.com/library/wifi_download_redirect.php
Then run and install the program
if you get an error - You need NET Framework installed for the WiFi Inspector to function.

Run the program

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

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

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