My HP deskject F380 All in One Printer cannot detect the Black Cartridge but detects the color cartridge It was showing Catridge problem & cannot print . I reloaded the driver at PC but could not solve the problem so I changed with new HP 21b CARTRIDGE but no solution. It is now showing

SOURCE: What to do? HP Deskjet F380 Error with Cartridge 21b.

hi!!!

removed the cartridge
and placed it back properly!!!

SOURCE: printer will not recognize new blk ink cartridge.

1) Please do not use RE-FILLED cartridges as they will clog the heads terribly.
2) Turn off printer, Remove all cartridges, Gently move the printer head to the RIGHT with short thrusts. It is not necessary to move it completely to the right hand home position just simply away from the obvious jam.
3) With a flashlight and tweezers try to locate paper jam in the print head track. Best to also blow out paper chafe with a weak air bulb. WARNING: Do not let your male friend or relative use extremely strong air pump for tires or air blower at corner gasoline station. (Do not purchase the cheapest paper the future)
4) Unplug the printer to allow it to completely re-initialize the internal electronics..... about 10 minutes should be fine.
5) Replace all cartridges.
6) Power up printer, then re-boot your computer with the activated printer connected, then print a test page. Everything should be fine.

SOURCE: printer will not recognize new blk ink cartridge.

I think either the printer's scanner(or film as some call it) and/or the carriage is faulty. The signal cable that connects the carriage to the logic board could also be a suspect. Try replacing these items one after another and the culprit will be isolated. Good luck.

SOURCE: HP Deskjet 5550 will not print black&white after cartridge change

Here is a link to a page that explains how to clean the cartridges:
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&taskId=110&prodSeriesId=71895&prodTypeId=18972&prodSeriesId=71895&objectID=bpa00226

SOURCE: print cartridges missing or not detected

Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} Please try follow these steps to resolve your issue:

1. Take the ink cartridges out of the printer.

1. Turn off the printer and wait a few minutes.

1. Turn the printer back on and insert the cartridges, and make sure that cartridges are properly inserted in place.

1. If problem still persists, clean the ink cartridges.