I have been successfully printing from my laptop (Windows 7) to a Lexmark Z2390 printer. I then had to replace the print cartridge and now it won't print. I have uninstalled and then reinstalled the printer software. I can print a test page if I hold down the printer on/off button for 5 seconds or more. If I request a test page from the laptop it goes through the motions e.g. the pop-up screen comes up to imply the document is being sent to the printer, but nothing comes off.
