There is now nothing connected to the board other than the USB cable.
I was using a 12v 1.8deg 0.4A RS Stepper Motor connected to an Arduino motor shield with an Adafruit 16x2 RGB LCD shield on top of it (so stacked).
This setup was working fine and I was controlling the stepper motors movement from the buttons on the LCD board. When I went to load a slightly modified bit of code this is when it stopped working. So I went back to basics and trying blink with nothing else connected.