If you need to fix your wireless connection, here's some troubleshooting tips to solve your connectivity problems. You are probably on a computer with a network connection, you wouldn't be able to see this page otherwise. :)
Many new laptops come with a physical switch that disables the wireless connection. Consult your computer’s manual and make sure that if you have such a switch, it is switched "on".
But what if the switch is "on" and your wireless connection still does not work?
Take a look at Windows Device Manager and make sure that the wireless card is listed there. Learn how to access your Windows Device Manager
If there is trouble with the Network adapter in the Device Manger, it will have a yellow exclamation mark next to it.
Next, log to Windows Control Panel/Network Connection, and make sure that there is Local Network Connection for the device.
If there is no icon for your Local Network Connection, Reboot your computer with your wireless switch "on". Windows would install the Network Connection.
Right click on the Local Network Connection icon, and choose properties.
If every thing is good thus far, look at the TCP/IP properties of the Wireless Local Connection.
Notice that the TCP/IP is set to "Obtain an IP Address and DNS Automatically", unless you were instructed at the first time when you set the Wireless to use a Static IP, you should leave it on "Obtain Automatically".
Many new wireless laptops and wireless ready desktops come with a configuration that loads the original wireless manufacturer’s utility at startup. The wireless connection can be maintained only by one agent. As a result, most of these utilities are programmed to switch off the Windows Zero Configuration (WZC).
Many people prefer the flexibility of WZC. In such a case the 3rd party utility has to be disabled from starting, and WZC has to be initiated again.
The following link will describe the process for enabling the WZC.
What if the wireless connection seems to be working and you can see in the wireless application that there is a signal and an available Wireless source but you still cannot use the Internet?
Seeing a signal in the wireless configuration application does not mean that you actually have a functional Wireless connection.
If you can use the Internet with your wireless computer, the wireless connection is OK. If you do not have an Internet connection available (or the connection does not work) a simple way to ascertain that you have a basic wireless connection is to try to use the Internet browser in a wireless client computer and find out if you can connect to the (Access Point). Most AP's are encrypted with a key, it is this key that is needed to complete the connection. Once you have the key and you try to connect WZC should ask to enter the key.
Hopefully these troubleshooting tips will help you with your wireless problems. If you have other tips or troubles, please leave a comment.