One long beep followed by three short beeps generally indicates a problem related to the video card or the graphics system. This POST beep code is commonly associated with an error in video card detection or failure. In a situation where the computer was functioning correctly before being moved, it's possible that the video card may have become unseated or disconnected during the process. Reducing the hardware components to minimum requirements, ensuring the video card is properly seated with all necessary power connections attached can help resolve the issue. The other answers are incorrect because the symptoms described by the POST beeps do not typically relate to a faulty CPU (which would produce different beep codes), insufficient RAM (where beeps would indicate a memory issue, but the error specifics would differ), or a peripheral device issue which generally doesn't stop POST.