Have you used the DriverPack Offline ISO recently? Did it fix your missing Wi-Fi driver? Let us know in the comments below (but don't post malicious links).
DriverPack Solution is an automated driver installation tool that scans your PC and matches its hardware with the correct drivers from a massive built-in database. The version contains all the necessary driver files locally, meaning you don't need a Wi-Fi or Ethernet connection to get your system up and running after a fresh Windows install. Key Features of the 4GB Repack driverpack solution offline iso 4gb repack link