Greetings all, I am having issues with my power supply cord. I have to manoeuvre the cord strategically to get the cord to work. If I hit the cord, near the box, my surface pro 3 will shut off. I can pull it out normally and everything works fine but if it is plugged in, it will turn off. More specifically, the problem seems to be at the base of the power supply box and the start of the cord. This is my third cord and I am not sure why this keeps happening.