I think your network controller is listed as a Intel Centrino Wireless-N 1000, thats why you cant find one from Asus.
According to your specs: Intel® WiFi Link 1000
Please download and install this file from the following link:
File name: Wireless_15.3.1_s64.exe Version:15.3.1
or for just the driver:
File name: Wireless_15.3.1_Ds64.exe
Hope this helps