wifi will not stay connected - DirecTV

My whole home genie will not stay conntected to my wifi. When it disconnects the only way to reconnect it is by a "hard" reset (power off completely) and then power up. With that process, it connects automatically. The connection will "drop" eventhough all other devices (computers) to the wifi will suffer no interruption after short period of time - a couple of hours(?).. Literally the only time the genie reconnected with the reconnect sequence under Setting using the password for the wifi was when Directv's install agent came out and reset it. I do not know how long it takes to "disconnect" but it is hours and not days. What do I do?

This question, "wifi will not stay connected," is about DirecTV channels, programming, equipment, and sports.