Hi, i know this post was old but i need to help you out when this situation appears again. I fix alot of computers and usually they come without drivers after reinstallation. follow these simple steps:
1.) Look up (Computer Name, Model, Manufacture) WLAN Drivers
2.) Choose the one you think is right
3.) install it
4.) after that connect to an internet and download UniBlue Driverscanner
5.) look up code on internet, no cracks or keygen needed.
6.) download whats necessary on UniBlue