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Cannot install Linksys BEFCMU10 cable modem driver to Windows Vista laptop

Posted on 2009-02-17
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Last Modified: 2013-12-14
I have had a Linksys BEFCMU10 v4 cable modem for some time and have had it installed and in use with a desktop computer.  I recently replaced the Desktop with a Toshiba laptop computer and when the ethernet cord was plugged in it did not work. The Toshiba LAN driver is installed (Realtek) but the computer does not recognize the Linksys modem.  I've downloaded the updated driver from the Linksys website, but there is no installation file.  Only .sys and .inf files, etc.  The .exe file is a uninstaller only.  I have the original install disk, but it doesn't seem to work on Vista (only gives me the pdf user guide which is not useful).

Any idea why the modem isn't being recognized and the ethernet isn't working?  I have a wireless connection using the same modem and a netgear router, but I'd like the faster speed of the ethernet.

Thanks,
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Question by:LKDaniels
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by:Ken Fayal
ID: 23667569
Just to open up the conversation, is your setup like the following?

ISP Internet -> [Linksys Cable Modem] -> [Vista Workstation]

Or is it

ISP Internet -> [Linksys Cable Modem] -> [Wireless Router] -> (connected via ethernet jack) [Vista Workstation]
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Expert Comment

by:Ken Fayal
ID: 23667589
You don't need a driver for the Linksys cable modem.  One thing you need to do after you change the PC connected directly to the cable modem is to power cycle the cable modem.  That way the ISP can resync the IP address to the new MAC address.

Power cycling means to unplug the power to the cable modem, wait a few seconds and then plug it back in again.  Make sure that your new VISTA workstation is already connected to the modem via the ethernet cable when you do this so it can reestablish communication to your ethernet port via the MAC address.  If this still doesn't work, then all you need to do is call your ISP and tell them you've changed your computer behind the cable modem and they should be able to reestablish the connection.
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Author Comment

by:LKDaniels
ID: 23667591
It is ISP Internet (Time Warner cable) - Linksys Cable Modem - Netgear Wireless Router (via Ethernet jack) - Vista workstation (laptop)

The only difference from when it was working a few days ago was that the workstation was a Vista desktop...
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by:Ken Fayal
ID: 23667619
Ok, then the information I wrote last would not apply because the Netgear Wireless Router is directly behind the cable modem and NOT the Vista workstation.  However, I would still give the power cycling a try just for the heck of it.  

When you sign in to the VISTA workstation, go to the "Start" ball, and go to All Programs -> Accessories -> Command Prompt.  Once you are in the black screen type in IPCONFIG and write back with what comes up in the window.  I'm specifically looking for the IP Address of the ethernet port.
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Author Comment

by:LKDaniels
ID: 23667666
Under "Ethernet Adapter - Local Area Connection"  I have several lines.

Here are two that may include the info you're looking for.

Link-Local IPv6 Address Fe80::180a:d44b:a591:aa98%8      

IPv4 Address  192.168.1.6
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by:Ken Fayal
ID: 23667722
Good, at least you are getting an IP address from the wireless router.  That tells me that your connection to the wireless router is good.  This would indicate that you should be able to access the internet.  Now in the same command prompt window type:

ping 63.245.209.24

You should see 4 lines following that look something like this:
Reply from 63.245.209.24: bytes=32 time=XXms TTL=242  

If you DO get the response as I stated, then try to do the following again in the command prompt window:

ping www.getfirefox.com

You should get the same kinds of replies.  If not, then we have to get your DNS servers put in your Wireless Router.

Question.  Can you connect the old Toshiba laptop to the wireless router via ethernet and still connect to the internet?  Is that how you are able to connect to Experts Exchange?
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Author Comment

by:LKDaniels
ID: 23667753
Both pings were successful in getting the 4 lines you described.

As of a few days ago, I had a Vista Desktop connected to the cable modem via the wireless router (ethernet jack)... and had been using the fairly new Toshiba laptop via the same wireless router (wirelessly, of course:  :)    The desktop is gone now and I simply moved the Laptop over to where the desktop was and plugged in the ethernet cord.   I'm still connected wirelessly, but no ethernet connection.
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Expert Comment

by:Ken Fayal
ID: 23667779
Ok, wait.. If you are pinging successfully than open up your browser and use the web!  You are connected.  You are connected via ethernet because you told me that you get 192.168.1.6 on the "Ethernet Adapter Local Area Connection".

What happens when you open up your browser and go to http://www.getfirefox.com?

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Author Comment

by:LKDaniels
ID: 23667817
If I click on network icon (the two computers), it tells me I"m currently connected to my secure wireless connection only.  Since I'm connected wirelessly, if I go to www.getfirefox.com I get the firefox download web page.   But if I disconnect from the wireless connection...   I get no internet connection.  Couldn't be having our conversation if I disconnected from the wireless connection   :(  

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Author Comment

by:LKDaniels
ID: 23667838
Well, holy crap.

I think I"ve just about wasted an hour of your time and 3 of mine.   I disconnected from my wireless network and I still had an internet connection.   So I must have LAN connectivity.  Is there anyway to verify the speed of the connection to see if it's truly the ethernet or that the wireless network is still working somehow?  It still shows me connected to the same network name as my wireless connection, but that is likely because it is the wireless router that is directly behind my computer.   Am starting to feel really stupid..
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by:Ken Fayal
ID: 23667843
Ok, assume that the things I'm asking you to do must be done WITHOUT being connected wirelessly.

I already see that you are connected to the Ethernet Adapter Local Area Connection (This is the wired connection)  at 192.168.1.6.  This means the Netgear gave your ethernet (WIRED) connection a proper IP address.  

Now redo the ping tests that I talked about earlier and lets see what you get.
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Ken Fayal earned 2000 total points
ID: 23667874
No problem.. Just remember to give me the points for helping you.  :) Ok.. Let me shed some light on the situation.  If you are connected Wirelessly you're probably going to be getting somewhere's around 54 MBps or greater.  If you connect via Ethernet, you are going to get up to 1GB of speed ONLY if your Netgear wireless router has 1GB connection speeds.  Otherwise, it's 100MBps. Sadly, most ISPs don't give you any more than 22MBps speed.  That's what I get from Cox here in San Diego but I'm paying for the extra speed.

To break it down, your Wireless connection speed is already greater than that of your ISP speed, so it won't make that much of a difference if you are wired or not - at least over the Internet.  Most people go wired mainly for Internal speed benefits (I.E. computer to computer) like if you have two computers with GB speed.

In any case, you can test your wired and Wireless speed by going to a cool site called http://www.speedtest.net.

I hope that helps.
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Author Comment

by:LKDaniels
ID: 23667888
I believe I am disconnected wirelessly and still have an internet connection.   If I click on "connect to" it gives me my wireless network as a choice to connect to (indicating I'm not already connected to it wirelessly).   Yet, I can still ping with the same results as earlier...   I believe I've elevated myself to idiot of the day...   :)
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Author Comment

by:LKDaniels
ID: 23667895
I also ran a speed test at dslreports.com and got the following results:

Speed Test #67012318 by dslreports.com
Run: 2009-02-18 03:07:27 EST
Download: 5498 (Kbps)
Upload: 485 (Kbps)
In kilobytes per second: 671.1 down 59.2 up
Tested by server: 55 java
User: 2 @ dslreports.com
User's DNS: rr.com
Compared to the average of 1400 tests from rr.com:
* download is 15% worse, upload is 41% worse

This is non-turbo roadrunner/timewarner connection.   I think that's faster than the wireless MIMO G connection I was previously using before I plugged in the ethernet
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Expert Comment

by:Ken Fayal
ID: 23667944
Do each test more than once because speeds change due to usage in your local subnet.  Your download speed was 5.4MBps, and Wireless connections are usually faster than that so it would have easily accommodated your Internet connection speed.  

In any case, I'm glad you're up and running.
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Author Closing Comment

by:LKDaniels
ID: 31548159
Speedy, clear and precise instructions that woke me out of a fog....
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Author Comment

by:LKDaniels
ID: 23667966
Thanks for your patience and your help.  
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Expert Comment

by:Ken Fayal
ID: 23667976
No problem.  Sometimes two sets of "eyes" on a problem can bring the solution to the surface.  Thanks for the points.
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