Hp LaserJet 400 M451 replaced cartridges​, but they still read "low"

Question

I have an HP LaserJet 400 color M451nw
When the cyan cartridge said it was low, I replaced it.  It then printed another 100 pages or so, without problems, then the printer told me the magenta was low , and I replaced it.  It printed a few more sheets, told me the yellow was low, I replaced it.
Now, although 3 cartridges have been replaced, it tells me the cyan cartridge is empty, the magenta cartridge is at 20%, and the yellow cartridge is at 70%  (all 3 of these cartridges are brand new HP catridges)
Now, it will not print at all, and insists the cyan cartridge is very low.
I have inspected all of the cartridges, was sure they were seated correctly, and I have reset the printer several times.
I cannot get the printer to "see" I have plenty of toner.

Answer 1

[Disclaimer - I have little experience or expertise in printers that use the 02 ink cartridges.]  That said the issue sounds like one that would be caused by air in the plumbing.  There is a long thread here, reading through has a few reported successes from reseting the printer.  I would suggest reading and trying the steps in these posts:
http://h30434.www3.hp.com/t5/Other-printing-questions/Ink-cartridge-empty-but-it-s-not/td-p/4101#m85... by longtimemacuser
http://h30434.www3.hp.com/t5/Other-printing-questions/Ink-cartridge-empty-but-it-s-not/td-p/4101#m17... by GRO
http://h30434.www3.hp.com/t5/Other-printing-questions/Ink-cartridge-empty-but-it-s-not/m-p/257743#M1... by sjwoolf
http://h30434.www3.hp.com/t5/Other-printing-questions/Ink-cartridge-empty-but-it-s-not/m-p/564581#M3... by sparky2011
Bob Headrick,  HP Expert
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