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HP Recommended
Microsoft Windows 10 (64-bit)

Help please, 

I've used my "set-up" ink cartridges with my HP7740 and already purchased replacement XL cartridges.  Ok, they are from Office World, but are HP re-conditioned cartridges.  They are not from a weird back of the hole company.....  and NOTHING!!  

The printer will just not communicate with the replacement cartridges.  

I've followed all the advice, I've un-plugged, un-inserted, re-inserted, waited for minutes while muttering everything from curses to charms.......  and NOTHING!  

Buying this printer was a Big step for me money wise.  Spending nearly the same amount for HP Cartridges is just not feasible, am very close to hurling the printer out of the upstairs window!  

Can anyone help please? 


Thank you ! 

HP Recommended



Product introduced end of September 2016


There is naught we can do - using reconditioned cartridges is not supported.


References / Information


This very popular printer model is still for sale -

HP Store - Officejet Pro 7740

Partial Excerpt from the web page:

  • Features
  • Specs
  • Ink & Paper
  • Support
  • Special offers
  • Reviews

Print, scan, and copy in standout color on sizes up to 11 x 17 inches (A3), for bold documents and presentations at up to 50% less cost per page than color laser.


Ideal for businesses that want a versatile all-in-one to help them show up professionally in a variety of sizes and at an affordable cost.


Dynamic security enabled printer. Only intended to be used with cartridges using an HP original chip. Cartridges using a non-HP chip may not work, and those that work today may not work in the future.





That said,

Printers not affected by Dynamic Security are those manufactured before December 2016.


HP Officejet Pro 7740 Firmware Update


This software tool will help you update your printer to the latest firmware. Please refer to Enhancement/Fixes for more detail about the firmware update.

Reminder: Dynamic security enabled printer. This Firmware includes dynamic security measures, which may prevent supplies with non-HP chips or circuitry from working now or in the future. More at: www.hp.com/go/learnaboutsupplies.

Note: For printers manufactured prior to December 1, 2016 dynamic security will not be enabled by this firmware. Please note that HP cannot guarantee the quality or reliability of non-HP cartridges.



Reference and Resources – (More) Places to find help, solve problems, and learn how to use your Printer

Printer Homepage – “Things that are your printer”

NOTE:  Content depends on device type and Operating System

Categories:  Alerts, Access to the Print and Scan Doctor (Windows), Warranty Check, HP Drivers / Software / Firmware Updates, How-to Videos, Bulletins/Notices, Lots of How-to Documents, Troubleshooting, User Guides / Manuals, Product Information (Specifications), more

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

HP OfficeJet Pro 7740 Wide Format All-in-One Printer series


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