My machine wont follow commands

My machine won’t follow instructions. It wont frame or even move to where my project is located. It will move to the right about 4 inches and make a square that returns to Home no matter where my project is positioned. Sometimes it will just move to the right making a grinding sound and not moving smoothly. I have tried everything I could think of but nothing worked. I used it earlier without any problems, then I changed projects and laser wouldn’t burn then it wouldn’t do anything. Any help would be greatly appreciated. Thank you Bob Coleman

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