The users of HP Printer often put up questions like why is my HP Printer offline Mac or ways to fix it. Now if you wish to fix it, you are supposed to restart your printer by turning it off and then wait for 10 seconds and then disconnect the power cord from your printer. Now, you must turn off your computer and then connect the printer power cord to the printer and then turn the printer back on. By applying the onscreen instructions you can simply fix it.