Start light blinking

My Dishwasher workedd fine last night, today, I loaded it, shut the door and tried to turn it on. The start light keeps blinking, I hit cancel and it stopped, I tried to reset it by alternating the dry and sani rinse button, but that didnt work, usually it will send the dishwasher into test mode and fill up, but all the lights just stayed lit up. I canceled again and the lights went off. I cannot get it to work. The start button just keeps blinking and it wont cycle. I think I hear it laughing at me. HELP PLEASE!