If cost per print isn't an issue and volume is low, have you considered an inkjet like an epson 3880 or 4880/4900 or a canon IPF5100, etc. The...
Which specific hp printer are you using? Do you have another genuine hp cartridge to install as a test?
That's probably the best answer :D Depends on what you have your sights. 1 colour means you're printing one color. Black. Or a spot color...
I believe the NVM to reset is 744-350 = 0 Hope this helps.