So could it be a cartridge problem even though the printer says both cartridges are full? Remember I tried two different printers and neither of them printed.
There's full, and then there's full and clogged. So yeah, it could be the cart, could be the nozzles, whether they're on the cart or a seperate unit.
What the real indicator that it's not a problem with the PC is that printing the test page from the printers internal electronics game you the same results: a blank page.