So I was calibrating the stepper drivers on my Ramps 1.4 board when I touched the stepper driver with my screwdriver by mistake, That melted my Stepper motor connector and fried the voyage regulator (I tested it, making ),making the LCD contrast weird and the SD reader not working. So I disconnected the D1 diode and I connected 5V from my power supply to the VCC pin on Ramps in order to avoid usby jmrp98 - RAMPS Electronics