|Just for info, MS disable System Restore when you do the upgrade so you might need to switch it back on again.|
One easy thing to try is to go into Device Manager, find your Wifi adapter in Networks then right click it and Uninstall it. This is not like a normal uninstall, it just breaks the link between the hardware and software. When you restart, the system will find the hardware and set it up again (which can solve issues). If it ask whether you want to "remove the software" do NOT let it.
Always pop back and let us know the outcome - thanks
message edited by Derek