try to access the DELL printer solution center on your notebook, then click on the left hand side tab which says maintenance, and select the option that says to install ink cartridge. when you are prompted to choose between new and old, select new, and probably your cartridge will be detected afterwards.. :smileyhappy:

Are these NEW Dell cartridges or ones that have been refilled or remanufactured.  Refilled/Remanufactured cartridges can show empty even if they have been refilled.  There is a chip inside the cartridges that detects the approximate ink usage and once the chip determines the cartridge is "empty" there is no way to reset the chip to tell the printer it's been refilled.