There are a number of things to try
1 - disable and re-enble your wireless network card
2- some Laptops have a manual turn on/off wireless
3- on the keyboard there maybe a symbol for the wifi, press it and see
4- check to see if you are getting a valid IP address,
if it anything like 169.254.xx.xx then this is a self assigned IP address, you need to look at your browser settings
5- Also check your router settings
I came home from a business trip yesterday and my laptop (IBM Thinkpad w/Windows XP)won't connect to the internet. I have a wireless network set up (D-Link), with a hard-connected PC and my son's Gateway laptop. Everything was working fine when I left, and my laptop worked fine at the hotels and airport yesterday. Now it won't connect, although the pc and my son's laptop are having no problems. I paid for the airport wireless connection yesterday - could that have reset or screwed something up in my settings?
I've tried everything I can think of and am at my wit's end. On the task bar, it says I have an excellent connection, but when I open the wireless networks, it says "not connected". I've tried the Windows "repair" button, but it says it can't connect.
Any suggestions greatly appreciated!!!