Wireless chip for a ASUS

Hello,
i have a ASUS Eee PC 1000HE and my wireless wifi isnt working. My computer says that im connected and shows on my tool bar that im connect but when i try an click on the internet it displays this infomation is unavaible.Also ive tried to reboot my hole system to the factory settings and my f11 and all of thse seem not to work meaning ive try to shut down the computer and hit those numbers but it dosent want to work. help please