Major issue with HP Ink jet printers.

 If you have a HP Inkjet printer, and use printing sparingly, you need to pay attention to this major(?) flaw with HP printers.

Ink Jets need to be used, to be printed at least 2 pages of text or one good picture every 2 or 3 weeks. Failure to do this leads to the ink drying up inside the print head which in most cases, is not replaceable and you end up replacing the entire printer.  And they are not cheap. 

If you get the dreaded "There is a problem with the print head" error, with no error code, there is a 99% chance this is what has happened and it will cost you bucks.