Hp cn216a suddenly will not print or copy black ink

You may need to perform a align cartridges if you still face the same problem then you might need to do head clean by putting the cartridge heads in warm water for like 5 minuts and then put them back hopefully this shall solve your problem.

HP Photosmart Premium C309 not printing black

Got that problem also, Black would not print but dark grey would be printed ???
What i did and it worked was reset to factory settings, unpluging the printer for ± 25 seconds
holding 3 and # for and other 25 seconds went and after pitting power back on
then re-enterring your setting, all went fine
http://h30434.www3.hp.com/t5/Other-printing-questions/Photosmart-C309-suddenly-stopped-printing-black-ink-any-solution/m-p/495549#M30719
Hopping this will help others

change the ink cartridge & get your printer serviced

try to reinstall the printer driver software. you can download the latest printer driver software from yout printer manufacturer's web site then restart the computer and printer.

Try removing the printer drivers and reinstalling it.

i've fixed a simular issue recently, it could be your print head has developed a issue\blockage for the nossles for the black ink tank, it could be mixing colours from word but a black white copy will just use the black ink, try removing the head and using isopropol on a qtip to clean the head for the black only.......

Check your default ink setting if red is default then change it and make black ink default settings.
Thank You

see if this works, its worth a shot. not correct code but may help . Shut down your printer by pressing Simultaneously Cancel + OK + Black + Color

you must change your printer settings to the default settings.

I have changed the BLACK cartridge ( as suggested ) but still cannpt print or move breyond the PROBLEM Note that comes up to CHANGE the Yellow and Black Cartridge - I cannot SCAN or COPY leave alone PRINT - please suggest a solution - Thanks ,

Adrian