If you can hit this page - you technically speaking.. you actually have internet.. - this "temp" webpage is hosted in australia! - this is also technically considered the "dark web"Anyway!
If I can get you to do the following;
1. Download the Firmware using the link below - and install the program; (This will update/refresh all your drivers) including the faulty wifi one.
Download this Firmware (Surface 4)
If this still hasn't worked - download the link below (2.) "AnyDesk" - and text me your ID.