Hey there! @Billiken-72, Welcome to HP forums.
I understand your printer will only print a half-page and stop printing.
Don't worry I will try to help you out.
Did you make any changes to your printer?
Please try the steps recommended below.
Resetting the printer can help restore a connection to the computer.
If the printer is off, turn on the printer, and then check the status of the printer.
If the printer starts printing jobs from the print queue, your printer is clearing out queued print jobs and is online. You can stop troubleshooting.
If the printer goes to an idle state after its startup routine, it might be online.
If the computer still shows the printer as offline, continue using these steps.
With the printer turned on, disconnect the power cord from the printer.
Unplug the printer power cord from the wall outlet.
Wait at least 60 seconds. Restart the computer while you are waiting.
Plug the power cord back into the wall outlet.
Reconnect the power cord to the rear of the printer.
If the printer does not turn on by itself, press the Power button to turn it on.
Make sure the printer is connected to the computer or the network.
Wireless network connection: On the printer, open the Wireless network or Settings menu to make sure the wireless signal is turned on. Make sure the light next to the Wireless icon is on and steady.
Refer this article to further troubleshoot printer offline issues.
Hope to hear from you soon!
Take Care! 🙂
A4Apollo
I am an HP Employee