Resolve Windows 10 related issues for your HP computers or printers by HP Windows 10 Support Center
I HAD INSTALLED A CARD TO USE DUAL MONITORS
> horizontal print?
Do you mean that the printed page is printed in "landscape" mode?
Access "properties" for the printer, and reset the printer to "portrait" mode.
Or, when printing from E-mail, choose "portrait" mode for the current page(s).
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