Inter net wont work

Wait Black Screen? AFTER you changed the fan... hmmm... I think I know what the problem is. Okay solution one; You might of hit a wire or cord in the computer when you changed out the fan. Two: You might have the virus 223, get it fixed and it should be going again! Hoped this helped! :D

If the hard-drive is losing connection even after removal you should test to make sure that the drive is still functioning.
Try to see if your system has an on-board diagnostic, (f12 on startup, before the windows loading screen) this will tell you if the hard-drive itself is actually broken, or if it is just a connection.

Whenever you do an operating sytem reinstallation, windows itself will only have the basic drivers, and that will not include the network drivers for you to be able to connect to the internet (especially in windows XP). If thats the case you can use another system which has internet connection and go to http://www-307.ibm.com/pc/support/site.wss/migr-46258.html to download the driver for your LAN. Save it into a flash drive and install it to the system that you just did an OSRI. Restart the system and try connecting with the cable initially to the router to have internet connection.

Thanks!

I do not think there is a switch, however some of the T40's came without a wireless card installed, but was optional. Here are the part numbers if you need them to order one. 39T0071
39T0077
93P3483
91P7301

All from IBM

Try to restart the Services of Wireless Zero Configuration or Wireless Auto configuration in the Services Section. To open service, type "services.msc" in the run command.

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 :)

Normal 0 MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman";} You may have to install or update drivers Most of the drivers/software I get are from a web site driverguide.com you need to fill out a free registration then search for the driver you need download it in a format you can use install it and then most times reboot the computer

how old is your think pad and do you see an icon in task bar for internet

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 

You need to go through the eternet port or even the usb port to access the internet..When online you can vist the manufactorors website and get all the drivers needed for the wireless adaptor...