The Acer Spin 14 is a 2-in-1 laptop/tablet device that can be repaired or replaced by a qualified technician if necessary. The motherboard is the main circuit board in the device and contains many important components, such as the CPU, RAM, and storage. If the device is not functioning properly or not turning on, it may be a sign that the motherboard needs to be repaired or replaced. This process can be technical and may require the use of specialized tools and equipment. It is recommended that this type of repair is done by a professional technician with experience in laptop repairs.