try these ideas:1) (with your printer off or on),lift the top, like you do to access the printer cartridges, then gently close it,2) turn the printer on, and see if this works. If not,1) unplug the printer,2) plug the printer back in,3) turn it on,4) wait for it to give a read-out message that it is ready for copying.5) see what the computer monitor says (if there is any/no problems)6)if no response, run the diagnostics check (if your computer has one)7)still, if no response, read your manual, follow its instructions,8) call Lexmark's 1-800 tel. #, or send them an E-mail, with a list of things you did, and what happened (or did not happen).Good luck!