NO WIFI

Let me start off by saying I don't know much about computers. I have checked all my cables and have determined that when the WIFI quits the cablr coming in is still OK. I can disconnect power from the modum for several hours and it will then work. If I power dowm for 2 or 3 minutes it doesn't help. Added  a external fan because I thought it might be a heay related issue and that didn't help. I only have amazon fire TV, Lap top , and a phone. Usually when it quits there is only 1 device being used. I can't find anywhere the length of warranty. This unit was purchased 5/15/2018 and has been a probiem for several weeks now.