Question about Dell Latitude C640 Notebook

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Dell c640 wireless connectivity problem

C640 will connect to internet fine with ethernet cable, but wirelessly on secured network will not connect to sites where data is exchanged- logins etc. Will work fine wirelessly on unsecured network. Any ideas?

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Re: Dell c640 wireless connectivity problem

That's gonna be a permissions problem in the way the wireless device was set up originally. Go to network devices, properties (of the wireless connection) and check advanced options for permissions. Also check the way the firewall was set up, and if it allows the connection you are requiring.
Good luck

Posted on Nov 18, 2007

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Wireless problem 4 ma dell c640 laptop

Hi. first is to verify whether you have a wireless card or not by going to the device manager from the control panel.

Expand the network adapter and check if your system came with a WLAN or wireless card. If it's a Dell True Mobile wireless card, you can download the latest driver from this link:

then try connecting to your router by right-clicking the network icon from the taskbar (lower right-hand corner of your screen) then select view available networks and if you see your network there, click it and then connect.


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Go through the settings on your husband's notebook settings for your home network and set your Dell up the same way. You will need to know the SSID for the wireless network, security type and key to set it up.

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If you are using Windows XP, go to Control Panel > Network Connections. Right click on Local Area Connection and then click Enable. (This is only applicable if the ethernet port is disabled).

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How do you connect to the internet ?

what u can try is that install the lynksis cd on the computer and then open the network connection and then right click on the wireless network connection and then click on the view available network and then connect to ur network connection and it should work or else the best way u can do is that u can call up dell technical support and they will be definately able to help u to connect to internet cause i really cannot explain all the details here cause it need to be done troubleshooting on ur computer practically by connecting the router with the laptop with the ethernet cable and when u connect the internet with the ethernet cable then the dell guys can take the remote session in ur computer so that they can help u to connect to internet wirelessly.

follow 4 steps to connect to lynksis:-

In order to follow thesen four steps all u need to do is that just follow this link very caarefully and u will definate;y be able to connect to internet wirelessly with the lynksis..

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Is your laptop/desktop getting the ip address from your router (if you have one?)
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I used Everest home edition to find the wireless drivers for my DELL C640 laptop.   The wireless card in it is an  ntel PRO/Wireless LAN 2100 3B MiniPCI Adapter (IBM). I've downloaded the wireless driver from Intel's website, here:*+XP+Professional〈=eng&strOSs=44&submit=Go!#DRI
It's the 3rd result in that search page. If the link doesn't work, simply search for Intel® PRO/Wireless 2100 Network Connection on Intel's site. 
That Dell C640 wireless driver works fine for me, I'm using the wireless card to type this :)    
good luck!

Aug 17, 2007 | Dell Latitude C640 Notebook

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