Wireless wont connect to internet

Hello,

Thank you for taking your time to read this and trying to help me in advance.

I have a Toshiba Satellite L305 Laptop,
Windows Vista Home Premium OS,
Wireless Card: Intel Wifi Link 5100,


I turned off my wireless switch on accident yesterday and when i turned it back on my internet wouldn't work. The connection says that it is connected to the internet with 5 bars but chrome and IE display the "No internet page." I can however go on aim and steam chat but anything else requiring the internet doesn't work. I've checked for proxy servers and all the other computers in my house can connect to the internet no problem. I can also access the internet fine on a LAN cable to the modem. Any help would be greatly appreciated.

Once again thank you.