I have recently upgraded from window 7 home premuim to windows 7 ultimate.... i couldn;t just upgrade so i had?

I have recently upgraded from window 7 home premuim to windows 7 ultimate.... i couldn;t just upgrade so i had to click custom install ....now i am unable to connect to my internet wirelessly... first it says that wireless is not enabled and then says it cant find any network interfaces... i have tryed wlan autoconfig and sfc/scannow ...how do i get my wifi working again?