Hello Majewa,

Thank you for posting to the forum. Without know your model printer the info I can provide is limited. Please review the link below for proper trouble shooting steps. If issues persist it may be best to replace the printer.

http://www.dell.com/support/troubleshooting/us/en/19/KCS/KcsArticles/ArticleView?docid=122270

Regards,
Joseph E

[tag:iworkfordell]

My printer wont print; it says "printhead not supported by all-in-one. What does that mean? and what do I do?  majewa

majewa,

Please continue with Joseph.

I found your other post in the Dell V313w Printer thread and joined it here.

Try reading...

Cleaning the Printhead on Dell AIO V313w, V515w, V715w, P513w, and P713W Printers

Troubleshooting Printhead Problems on the Dell AIO V313w, V515w, V715w, P513w, and P713W Printers

The Printer Does Not Recognize the Ink Cartridge or Only Prints in One Color

And here is a Replacement Printhead if needed(limited quantities available)

Rick

My printer wont print; it says "printhead not supported by all-in-one. What does that mean? and what do I do?  majewa

Hello Marjews,

Rick and I have both provided you links to trouble shooting steps that provide some possible solutions. Re-posting the same details repeatedly does not allow us to help you any further, that being so unless you can provide additional details or concerns I am going to mark your post as addressed with no further response needed. 

Regards,

Joseph E

[tag:iworkfordell]