This new router installed and performed without issues at first. The other night my ISP had a big outage. In the course of restoring service we restarted the equipment and managed to get all the devices back up and running. I found that my office destop (connecting through a USB wireless adapter, a Carentee AC1200) would not display one  of the networks on the list of available networks anymore. That network did however show up on the other devices in the house. Originally I had established 2 networks, one was for 2.4G with a unique SSID/PW and the other was for 5G also with its own SSID/PW. I find the 2,4 on my desktop and it connects fine. The 5G however doesn't. I have checked all the settings both within Window 10 and in the operator's console online at TPLink. All appears to be in order. I am considering doing a network reset in windows and uninstalling and disconnecting the router and reinstalling as if fir the first time. Does this sound like a resonable approach? I am baffled. ANY insights?? I'm sure this is just something I am overlooking.