Thank you for your assistance. I have basically no knowledge regarding these matters but I will try to tell you what I have uncovered. 1. New computer does not show my wifi as an available network,...

The new computer does not see or detect my wifi, but sees all other secured wifi networks from my neighbors.

I have a laptop, phone and tablet that all connect via my router. I have a couple of older laptops that would not connect. I just bought a new laptop, and it will not connect either. What changes can...