Hello I bought a replacement black ink cartridge which was showing up on the display as 'incompatible/empty cartridge'. I followed all instructions and now it has changed to the cyan coloured one - which hasn't been changed as I never use it. Switched on and off/cleaned etc etc. I feel like I'm in the 7th circle of hell and I have a tonne of stuff to print for the end of term. I've been onto HP - useless. Is there a hard reset I can do? Sorry if this is in the wrong section. No idea where else to post. going out of my mind!!!! MTIA