All lights lit on modem/router, but no WiFi networks detected

[Pascal2020]

I lost power for 2 seconds, I lost my WiFi networks (both 2.4 and 5). I have a NETGEAR Gateway C6300v2 (modem/router). Even though all lights are lit on the modem/router, the WiFi are not detected by devices. I have reseted and unplugged the power cable multiple times to no avail. The wired internet connection works (so the problem is not my ISP), meaning the modem portion works... but apparently not the router. I even went online in the modem/router settings and tell me that the WiFi networks works, but no devices can find my networks. What's wrong with this?

[FURRYe38]

Power OFF the modem for 30 seconds then back on. 

Be sure no wifi radio buttons were accidently pressed. 

Last resort is to factory reset the modem and setup from scratch...