When I turn my Samsung Galaxy Express's WIFI on my WIFI on my desktop immediately shuts off. Some times immediately and sometimes it will last a good 30 minutes before shutting off. I've tried factory reset and changing the broadcast channels etc and nothing gives. I have a ARRIS TG862G Modem/Router through Time Warner. Any help regarding this would be immensely appreciated as I have never heard of this problem let alone ran into it.