Need Some Help with Kali Linux 2.0 Dual Booting with Windows 7

hey guys , after i searched the Internet for 5 days i was unable to find anything that can fix my problem , so i came here hoping that you can help me ... , i started reading the aspiring hacker series and installed kali linux 2.0 64 bit amd as a duel boot with windows 7 , and i did that by installing the iso from the main website then burning it into a dvd , then i booted into Live and installed it from there , when it reached the network setup it gave me the choices of how i wanted to connect into the Internet , so i choose wifi and then the setup completed normally ..., after the installation was done i booted into kali and when i tried to connect the wifi it fails , although my wifi connects when am booting into windows 7 and and the wifi led on my laptop is on , am a newbie with linux i really really would appreciate your help on this as your my last hope :) , sorry for my bad English and thank you for your time .