Can't find network controller driver for the t40

Windows is missing the "device-drivers" for your network adapter and your modem.

On a different computer, access IBM's ThinkPad web-site, and download those device-drivers for your T40. Copy the device-drivers to either a CD-writable or to a USB memory-stick.

Move the media to your T40, and install from that removable media.

Hello,
at the following link you will find the possible drivers for the T40 serie. Look under the section Networking: Wireless.
http://www-307.ibm.com/pc/support/site.wss/document.do?lndocid=MIGR-46258
Make sure to identify which wireless adapter you have in your current system.
Regards,

this is an old model. if your actual specification actually meets Win 7, it may work, however, the challenge would be with the drivers. You can go to http://www-307.ibm.com/pc/support and select your correct T40 edition to confirm the availability of the system drivers that you need after making sure your actual specification like process speed, amount of memory available, video controller and disk space are all met.

Hi it sounds like your driver is missing or corrupt , this may be the case if u have recently installed windows, go to control panel click on sytem icon then click on device manager button under the hardware tab, have a look then under network adapters to see if there is a yellow warning icon if so make a note of the name and you should be able to download the driver from this location. its near the bottom under networking wireless. 

http://www-307.ibm.com/pc/support/site.wss/document.do?lndocid=MIGR-46258

please rate ! hope this helps :)

Hello, if you see a yellow exclamation mark it means device drivers are not installed or are incorrect.
below is the link for IBM/Lenovo site that lists all the drivers for Thinkpad T40/T41. Go to that linkand scroll down to " Wireless Networking" and select the appropriate drivers: eg: Make sure it under T40 section, and not T41 since they are listed side by side.
since i am not sure which exact wireless card your T40 has i am posting this main link where it lists all options.
I would start with "ThinkPad 802.11bg wireless LAN Mini PCI adapter" if this doesn't work try next one in the list.
here is the link: http://www-307.ibm.com/pc/support/site.wss/MIGR-46258.html#wireless

I hope this helps, let me know if there is a problem.

Kind reagrds,

Amar Sondhi

Hi,

For wireless network connectivity u have to install the respective Laptop drivers for it after updation only then it will work

Thank U

Please rate my solution as it wil cost u just one click

When you download the T40 device drivers from the IBM/Lenevo WEB site make sure you select your model laptop and, they need to be the XP or Vista versions of the drivers you need.
When you run the driver programs they will be unzipped/expanded to the hard drive in a folder c:\drivers. Then you need to open the various folders and run the setup programs to install the various drivers.
NOTE - The T40 series laptops come with various different manufacturers devices (eg. there are a few different wireless model LANs) and if one version driver doesn't work you need to install a different one. It is a bit of trial and error to find the right one

When you download the T40 device drivers, they need to be the XP versions.
When you run the driver programs they will be unzipped/expanded to the hard drive in a folder c:\drivers. Then you need to open the various folders and run the setup programs to install the various drivers.
NOTE - The T40 series laptops come with various different manufacturers devices (eg. there are a few different wireless model LANs) and if one version driver doesn't work you need to install a different one. It is a bit of trial and error to find the right one.

if u ve usb slot and pci slot in ur laptop u can use wireless, there are may brands available in market like belkin , netgear , u can connect install the drivers come along with the wireless card install it and u ll go online wireless 

Follow this step
1.Click start-->Settings -->Network Connections
2.check to see that you have Wireless Network Connection
if no that mean you need to install driver for your Wirless.
ByeBye..takecare