If your printer is completely unresponsive or displaying a persistent red error light that won't go away, you can force a hardware hard reset using the control panel keys. Turn the printer .
To perform a complete memory wipe, you must enter "Service Mode" or "Tech Mode": how to reset samsung ml-2165 printer
Press and hold the on the control panel. If your printer is completely unresponsive or displaying
Are you getting a specific on your computer screen? how to reset samsung ml-2165 printer
This is an unofficial modification and may void your warranty. It typically involves dragging a specific firmware file onto a usbprns2.exe usblist2.exe tool while the printer is connected via USB.