Okay that makes much more sense, thank you. So today I plugged in the power supply, just like I did yesterday, and it fried something. I have no idea why, I literally did the exact same thing yesterday with no problems. So any ideas on how I determine what fried? I was able to upload firmware to the Mega without the shield and have both the green and orange LEDs on. I am hoping that is okay. I assume the RAMPs shield is what smoked, but I cant be sure. Is there any way to test the stepper drivers? I don't think they were affected, but they were plugged into the board.