Can you connect by ethernet?
Can you connect by ethernet cable?
Have you tried...
start>control panel>network connections
-right click on your wireless connection and click properties
-click on the wireless network tab and check the box that says,"Use windows to configure my wireless network settings"
-click ok. disable and re enable your wireless connection
-right click your wireless connection and click properties and then view wireless networks
-click the wireless network you want to connect to and then click the connect button
If this does not work....
Right-click wireless network in the system tray
View available wireless networks
Click on Advanced
click Wireless network tab and remove the wireless network from the preferred networks list and reboot the pc
Try to connect again.