Aileen1

There is a section especially for Printers HERE, that may be a better place to post this in.

Bev.

Aileen1,

Let me save you the trouble.

From doing my research, I have found that the 50C Error message comes from the cartridge, usually if it has been refilled. If this cartridge is new, please return it to the place of purchase for a new one or a refund.

Here's what happens when you refill the Dell Series 2 ink cartridges. There is a sensor in them that cannot be reset. Article on refilling Dell ink cartridges  

Dell ink cartridges can only be purchased at Staples, Walmart or Dell's website.

Rick