Hii my name is Luna Fallon i am from the technical team if you are facing a problem then you can visit our site. To get a Lexmark printer online, first ensure the printer is properly connected to power and your computer. Turn on the printer and go to the "Printers" or "Devices and Printers" section of the "Control Panel" on your computer. Right-click on the Lexmark printer and select "Use Printer Online" from the options. Check the printer's status by printing a test page. If it's still offline, check connections and ensure it's set as default. Restart both the computer and printer, check for software updates, and consult the manual or contact the manufacturer if needed.