Lost my network printer connection

Well, that really depends upon how you are "networked". Obviously, the primary PC is USB 2.0 connected direct to the printer. When you send a print job, the PC merely starts the print job and sends it to the printer on the fly. The other PC must first spool the entire job, packet it up, send it to the network, then network sends it to the first PC, where it must unpacket it, and send it to the printer. This is definitely going to be slower than a direct connection. And if your network connections are wireless rather than wired, even longer.

Go into your computer printer set-up and check if there are any jobs left to print. Check manual or tech support. Maybe youtube has video on it.

When you say :"identical" do you mean the same unit, or another unit of the same model? I experienced the same issue after moving, with a new "identical" model modem/router provided by the ISP. Until the provider replaced the router with another "identical" one I couldn't get the wireless printer (HP in my case) to connect no matter what I did either using the WPS function or entering my network settings manually. Other wireless devices worked okay.

Not quite sure we got the complete message there- but here goes., You've recently changed routers and now your networked printer is no longer connecting to the network.
1.) remove the driver from your Pc
2.) turn on printer- when ready press menu button , use the arrow keys to navigate and the print switch for enter - select SETUP, then I/O connections/networking, then select Auto-IP enabled, Boot DHCP.
3.) turn off the printer, wait 10 seconds, turn on the printer allow to come to ready
4.)n reinstall the driver, it should search automatically for the printer.

Running the risk of a thick ear from the wife, I would dismantle and uninstall the network. Reboot your computer and set it up again then add your wifes computer without letting 7 change the settings.

Get the driver from www.hp.com
while you are there check the firmware version. And upgrade to latest firmware. Follow directions to the letter. Do the "easy firmware installation", it's the first one listed.

Hi there
Why mess around just change the Vista PC to windows 7 then all be ok.

It sounds like the printers ip address may have changed. Try to remove the printer from the PCs that can no longer print by going into Control Panel, Printers, and delete.

Then, click 'add printer' and browse for the network printer again.

There might be a problem with the network connection. Is the cable connected to the back of the printer?
The printer could have lost the connection.
If the printer is able to print a configuration page and if the display responds to comands from the buttons in the display panel there is a very good chance the network connection was lost.
Yo mentioned "paper jam" is the printer identifying a paper jam?

You have changed your IP address when you connect to the VPN so your network is no longer valid for that VPN session. What you can do is share the printer and then add it as a shared printer while 'in session'.