1. the parallel port, serial port and USB interface will restart automatically when they are connected to faulty or incompatible external devices.
2. the internal circuit or chip of the CD-ROM drive is damaged. The CD-ROM drive is damaged. Most of the performance is that the disk cannot be read / engraved.
3. there is a problem with the reset switch on the front panel of the chassis. The reset key on the front panel of the chassis is actually a normally open switch. The reset signal on the motherboard is a +5v level signal, which is connected to the reset switch.
4. it is rare for the motherboard to cause automatic restart due to motherboard failure. Generally, there is a fault in the circuit related to reset; The socket and socket have faulty welding and poor contact; Individual chips, capacitors and other components are damaged.