I just bought my ct630 a few weeks ago. When I first got it it was working fine. I was making cuts with no problems with flexi. Just the other day, it was in a middle of a cut when it it went bad. While in making a cut the knife went all the way to left and stoppped. I tried to reseting it by pressing the reset button, unplugging the machine, and disconnecting the usb cable. All I get is black row of blocks when I start up the machine. Does anyone have any idea whats going on?