No one can help you accurately unless you post the make AND model number. When asking for computer help, giving as much information as possible is essential. Otherwise, anyone posting in reply is just guessing. Instructions which are correct for one model of printer will probably not work for another unless they are the same brand and series, at least, and may lead to damage or other unintended consequences. For detailed instructions for your particular printer, go to the Lexmark website, select your printer from the appropriate dropdown menu and download the manual. All documents are in PDF format.