I have a toshiba protege laptop model number R700-15Q and have out windows 7 on it. My internet ethernet connection works but the WiFi fails.

seems it is Compliancy : Wi-Fi®
Network Support : 802.11b/g/n
Manufacturer : Broadcom®
Wireless Technology : Wireless LAN
Manufacturer : Broadcom®
Wireless Technology : Bluetooth®

do i need a new driver?
thanks
pete