

Just to clarify - you are manually adding the network name to Manage Known Networks and after rebooting the entry is gone? The OP indicated that their phone is able to connect to Not Myself Other Info: Macrium (Licensed), Password Safe, Office 365, Wise Disk Cleaner, Crystal Disk Info Synology NAS DS918+ 10TB, Netgear Nighthawk X8 R8500 Tri-Band

Samsung 860 EVO 1TB (Primary Data Drive),Īntivirus: Malwarebytes Premium, SuperAntiSpyware Pro (Licensed) Samsung 840 EVO 250GB (System Copy Drive), Hard Drives: Samsung M.2 NVMe 960 EVO 500GB Boot, Mouse: Logitech MX Master 3 Wireless & BluetoothĬooling: Corsair Hydro H150i, 360mm Rad & Five Corsair 140mm Pro ML Case Fans Keyboard: das Keyboard MX Brown Mechanical Switches Model DASKMKPROSIL-3G7-r1.0 Monitor(s) Displays: Asus VP279 27", Samsung BX2431 24" The only thing that I can think of, and it is nothing more than an uneducated observation, is that the only thing that the two computers have shared in common since I last knew that 5GHz was working on mine-and not having checked hers for an unknown time span-is the interim updates to Windows 10 Home 1803, as though something in Windows is blocking 5GHz. When Centurylink eventually started working, I checked my smart phone, which uses the same WiFi as the computers, and it was connected at 5GHz, meaning that the router was set correctly. I added 5GHz, which still did not show in Show Available Networks. Some investigation found that 5GHz was also not shown on my wife's computer, with both 2.4 and 5 shown in Settings/WiFi/Manage Known Networks, but the 5GHz had been removed from mine. Yesterday morning, when I found my machine off-line, and the DSL Internet light blinking wildly, the first thing I did was to click on the task bar icon, only to find that only the 2.4GHz setting was there.

I know that it was there on my computer, perhaps a month ago when the WiFi card was replaced, and I know that both the 2.4GHz and 5GHz entries were there on both computers in the past.
