Quick description of my network then I'll explain the problem.   Frontier DSL comes into the house in the living room to a Frontier provided router.  Our Roku, a networked printer (309) and a long ethernet cable are connected to it. Cable runs to my office to a hub which then splits to a laptop (Windows 10), a desktop (Windows 7) and another networked printer (6500).  There is a laser printer connected by USB to the office computers. We also have a Macbook Pro, a iPad, and a Windows 10 laptop wirelessly connecting to the network.

Suddenly last night my office desktop says it has no internet access.  It says is connected to the router but no access.  Here is the really odd part: when I tell it to print to 309 it prints to 6500.   The laptop is sitting beside it connected to the same hub and is online and works perfectly.

Suggestions or ideas?