Hello, I just received a twr-kw21d256 dev board. I plugged the USB in to my windows 7 laptop, and installed the drivers. The board appears to be on, but the demo program does not show anything on the terminal screen, and the quick start says I should see 4 blue lights flash and this does not happen. I am using PUTTY for the terminal program, and it acts like it connects to the serial port on the dev board, but nothing seems to be happening. What am I doing wrong?