I tried to print a 4X6 photo on 4X, but didn't tell the computer to change from letter size paper.

[JacJac38]

My computer has lost all knowledge of a printer.  HP Office Jet Pro 8710

[Dragon-Fur]

@JacJac38 

Welcome to the HP English Community --

Subject Line

" I tried to print a 4X6 photo on 4X,

but didn't tell the computer to change from letter size pa..."

=====================================================

Perhaps I do not understand what you want to do.

There is a 4R paper size in some parts of the world -- "on 4X" is something else??

OR

4X is meant to be "4x6 inch paper".

True -- If you do not tell the printer about the Tray and Paper settings (Paper Size / Type) on the printer or using EWS, AND you do not tell the print job setup (on the computer) about the paper size and type settings, then -- even assuming you are using an installed print application or software -- the printer and / or the computer might not understand what you are trying to do.

True -- If the printer software was installed and is no longer installed -- OR  -- the printer software is installed but is corrupted and does not work as it ought, then jobs will behave oddly.

Some thoughts on what you might be asking...

Start by making sure the printer knows which paper you are trying to use.

EWS - Tray and Paper

EWS > HP Document / How-to (InkJet Printers – Original Format)

 Use the HP printer Embedded Web Server (EWS)

NOTE:  Find printer IP address

Section Open the EWS over a local network orientation

OR

 HP Laser Printers - Using the Printer Embedded Web Server (EWS)

Open your Browser > Type / enter the Printer IP address into URL / Address bar

Reminder:  If asked enter the printer’s PIN number – the default number is generally located on the back or inside the printer.

EWS – Tray and Paper Management

Original EWS

Open your Browser > Type / enter the Printer IP address into URL / Address bar

Tab Settings > Preferences > Tray and Paper (Management)

Select / Adjust settings for Paper Size / Type

Model and EWS version Dependent:  Advanced section

Click Apply to save changes

Example - EWS - Tray and Paper

EWS_9025_Preferences_Tray_and_Paper_Management_All_11

Next - Job Setup - Samples

Example - HP Smart - Windows - Smaller print on larger Paper

HP_Smart_Win_Simple_Photo_Print_Letter_4x6_2

Example - Windows Photos - Select Print Size on Larger Paper

Photos_Print_Letter-5x7_4

Example - HP Smart - Windows - Simple Photo Print - Single Print 4x6 inch paper

HP_Smart_Win_Print_Photo_4x6_All_3

Example - Print Pictures - One or more pictures - Same or Different - on One Sheet of Paper

Print_Pictures_Multiple-Photos-on-One-Sheet-of-Paper_3

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References / Resources

HP Printer Home Page - References and Resources

Learn about your Printer - Solve Problems

“Things that are your printer”

When the website support page opens, Select (as available) a Category > Topic > Subtopic

NOTE: Content depends on device type and Operating System

Categories: Warranty Check, Alerts, Troubleshooting, Ink & Paper, HP Software & Drivers / Firmware Updates, Setup & User Guides, Product Specifications, Account & Registration, Warranty & Repair

Open 

 Product Home - Printers

 Enter the device type and model name of your HP product

OR

 Select a saved product from HP Account Dashboard

OR

HP OfficeJet Pro 8710 All-in-One Printer series  

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Question / Concern Answered, Click my Post "Accept as Solution"

[JacJac38]

When the printer screen notified me that I had the wrong paper, I saw a notice that I could tell it to not how me that again, and I clicked on it.  My mistake!!  I have resolved that issue several times about not telling the computer what size of paper I was using.  When I go to my "Scan Doctor" or "HP Office Jet Pro 8710" apps, the computer can not find a printer.