Generally speaking, computer failures include hardware damage and software program errors in two categories, the former belongs to the hard failure, the latter belongs to the soft failure. Hard failure can be divided into device failure, mechanical failure and human failure of three categories. Device failure is mainly caused by components, connectors and printed boards; mechanical failure is mainly external equipment errors, such as keyboard key failure; human failure is mainly caused by the machine does not meet the requirements of the operating environment conditions or improper operation.
The failure of the components themselves, such as capacitor expansion, blowing up, resistance to burn black, integrated block heating serious and so on, in addition to its own quality problems, but also may be too much load, power supply power or CPU overclocking use of reasons such as cause. In general, the failure of a just-installed computer may be a hardware failure or a software failure, but hardware failure is more likely. Sometimes, just installed computer failure, often caused by poor contact, such as a variety of plug-in cards, memory, CPU and other poor contact with the motherboard, or poor contact with the power cord, data lines, audio lines and so on.