[oblivionnewtonjohn]

I am using an Edimax EW-7711ULC which at first would not even show in the Adapters list, followed this KB provided by Edimax support, the device now shows in the Adapter list, is detected by Device Manager. I installed their Windows 10 beta drivers, still no luck in detecting my 5Ghz network. It was working fine in 8.1, I upgraded to 10 a few days later.

Unsure if it's the beta driver that's the issue or the OS, since I had to run the below to get the adapter viewable, that makes me suspicious there's something missing or corrupt with the OS install. It seems to me, if Device Manager can see the adapter, it should detect a network, but none are showing.

1. Go to the Search box, type in cmd and you will see cmd showing up in the search list. Right click on cmd in the list, then left click on Run as administrator

You will get into a black command prompt window.
Type it this command.
netsh int ip reset
Hit Enter key.

Then type it this command.
netsh winsock reset
Hit Enter key.

These two commands are from Microsoft.
https://support.microsoft.com/en-us/kb/299357