Ok. So the printer does see and pair with router or AP, but does not stay paired. Have you tried static IP's?

FrogFan wrote No, this is my printer: HP P1102W Thanks. Are you by any chance setting wireless to N-only? According to http://h10032.www1.hp.com/ctg/Manual/c01996606, page 23, 802.11b/g wireless...

I cannot even get program to run on Windows 7 system. I switched to using Trendnet program on Windows 7 system.

I downloaded WinPCap 4.1.3 and Win10PCap. I have installed, completely removed, including registry edits and folder deletions. And reinstalled. WinPCap installation always ran during utility...

FrogFan wrote For the record, all my wireless devices connected flawlessly with the WPA4220 except the printer. There is something about my printer (or wireless printers in general?) that is causing...

Is anything directly connected to kit on both ends to keep it active? It sounds like it is going into standby modem and you are just waking it up but unplugging and plugging back into socket.