Turn off your machine. If upon power-up, the machine goes immediately into rapid stitches again with no lights or beeps, you will need to replace your main controller board. Refurbished boards are $250 plus shipping. New boards can be purchased for $1000 plus shipping. Please contact us at 1-866-4-ISTURBO to order a replacement board.
Controller board replacement instructions can be found at:
If the problem is intermittent and does not continue when machine is turned back on, check all switches to make sure they are securely connected. Also check to make sure that your machine is plugged into a functioning surge protector, as power surges can cause this type of problem.