Can someone help me? I just set up my 3 d printer yesterday, I printed a Santat Buckle (YAY) today when I turn on my machine, fan don't come on and I have it attached to laptop using USB cable, and it will sit there for about 5 minutes then start beeping, and the screen says heating failed. It did this once yesterday I turned it off and 3 minutes later turned it back on, today the fan won't turn on and all it does after 5 or so minutes is beep. what do I do?