HP OfficeJet Pro 8740 will not allow non HP ink cartridges.

[BillMW]

HP OfficeJet Pro 8740 will not allow non HP ink cartridges.

[Jeet_singh]

@BillMW,

Welcome to HP Support Community,

HP recommends that you use genuine HP ink or toner supplies. HP cannot guarantee the quality or reliability of non-HP or refilled cartridges. If you do not use genuine HP cartridges, the steps in this document might not resolve the issue. 

In this scenario, you could try to update the printer firmware and check if that helps. 

If your printer connected wirelessly, make sure to temporary connect the device with USB and then follow the link to install the latest firmware update on your printer from our HP support website. Alternatively you can also try to update the printer firmware directly from the printer control panel.

For more details on how to update, please use this link: HP Printers - Updating or Upgrading Printer Firmware

If the issue persists, I would suggest here is to do a hard reset on the printer and make sure that the printer is connected directly to the wall outlet and not to the surge protector.

With the printer turned on, disconnect the power cord from the rear of the printer and also unplug the power cord from the wall outlet.

Remove USB cable, if present.

Wait for 2-3 minutes, press and hold the power button on your printer for about 30 seconds to remove any additional charge.

Now plug back the power cable straight to a wall outlet without any surge protector or an extension cord and then plug back the power cord to the printer.

Turn on the printer and wait till warm-up period finishes and the printer is idle.

You may follow the steps suggested in this support document to clean the ink cartridge contacts - HP Printers - 'Incompatible Ink Cartridge' or 'Ink Cartridges Missing' Error Displays

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