Your Brother's Printer could be listed as “
Brother Printer Keeps Going Offline” because it is not turned on. Even if your printer is connected to your computer via USB, your computer will not recognize any connection if the printer is turned off. Brother recommends checking the printer's LCD screen; if it is blank, then the printer may not be powered on. Make sure the printer is plugged into an electrical outlet, the outlet is working and all switches are turned to the "On" setting.