Question mark symbol on HP OfficeJet Pro 7740 printer display screen

[mtboyd2]

My HP OfficeJet Pro 7740 printer has been working OK from my iMac running MacOS Mojave version 10.14.6 - except today when no printing jobs would be completed and there is a question mark symbol on left side of the printer display screen.  Nothing that I know of has been changed.  The HP Utility on the iMac is able to connect with the printer and able to print Configuration Page.  I am able to print over WiFi from laptop computers and by email ePrint.  But when I attempt to print from a program, nothing happens anymore.  Please advise.  Thanks.

[Echo_Lake]

@mtboyd2

Thank you for posting on HP Support Community.

Don't worry as I'll be glad to help, I have a few troubleshooting steps we could try to fix the issue:

Ensure that the printer is up to date with its firmware and Mac is up to date with its software. If you are unsure you may use the links below to update the printer firmware and Mac software: 

Update printer firmware 

Update software on Mac  

  

1.) Click the Apple menu, click System Preferences, and then click Print & Scan or Printers & Scanners. 

2.) Check if your printer name displays in the Printers list, If your printer is listed, click the printer name, click the minus sign  

to delete the printer. 

3.) If you see multiple printer queues for the same printer, remove all extra printers by selecting them one at a time, and then clicking the minus button  

 at the bottom of the list. 

4.) Click the plus sign  

 click Add Printer or Scanner, click the printer name. 

5.) Click the Use or Print Using menu, select AirPrint in the pop-up menu. Then click Add. 

6.) Try to print. 

Hope this helps! Keep me posted for further assistance.
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