Posted after the fact, as an unhappy customer report.
Printer could not be accessed, and was not printing. After many attempts to correct the problem on the 'Devices and Printers' screen....connected to the HP support chat line.
The chat line offered to connect me to Tech Support. Tech support (with my permission, duh) - accessed my computer and showed me how I had 55,000 plus network errors and suggested my printer driver must be corrupt, etc. and then offered to correct it all for $99.99. He assured me that all would be corrected and the printer proven to work before the billing info would be requested. I asked how could I be sure this wasn't a scam. He indicated that scammers would ask for the billing info first and it would be 2 or 3 hundred dollars. I asked him to disconnect from my computer as I had to ask my husband (excuse), and I would phone back.
I called a more savy computer friend who said disconnect the computer , the printer and the router from the wall. Wait awhile and plug them back up and try again. Magic - it worked like new.
My unhappy customer report is a query: ' Why is HP Support not telling us something this straight forward and being our 'heroes'? Instead, I am completely leary of any future dealings with HP when they out source their product support to, dare I suggest ..'scammers'?