The newer Hewlett Packard printers have included in the software that comes with their printers, a "toolbox" that includes a section called Estimated Ink Level. Its a great tool that allows you to keep track of how much ink is left in your cartridges so you don't start a big print job and get stranded out of ink in the middle of it. The only problem is that has become quite troublesome on those who wish to refill their cartridges. If you refill your cartridge or have someone else refill your cartridge, it will read as low or empty when you try to print with the cartridge. How does HP do it? They started embedding a serial number in the contact strip located on the back of the cartridge. The printer remembers that serial number and gives the message of low or out of ink. The internal memory is located in the printers firmware and is not in the software. It will remember the previous two cartridges ink level. We have posted various ways to reset the ink levels so your Estimated Ink Level will read full again. Click on your printer cartridge number below to find out how.
Hewlett Packard 51645A/G (#45) or C6115D/N (#15) Black Ink Cartridge
Hewlett Packard C8727A (#27) or C6656A (#56) Black or C6658 (#58) Photo Ink Cartridge
Hewlett Packard C5011A (#14) Black Ink Cartridge
Hewlett Packard C6578A/N or C6578D/N (#78) Color Ink Cartridge
Hewlett Packard C6657A (#57) or Hewlett Packard C8728A (#28)
Hewlett Packard C5010A (#14) Color Ink Cartridge
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How to Reset Ink Level for Refilled Cartridges on HP Printer
HP Maintenance Message Reset Methods