Bad interconnection somewhere. If so, it could return. I'd open it up and reseat all the internal connections that I could easily access.
You can also try the PC forum since it's a PC monitor you are taking about. Someone else may have had a similar experience.
Abundant OTA television is what makes this country different from all others. Lets keep it this way. If you like Wi-Fi so much, OTA fits right in. After all, it is wireless.