Installation is not very good at this computer. Chaotic, not orderly cable. Very poor air circulation, and dust can make the computer problems.
If seen, this is the computer Intel LGA. It is not appropriate, the motherboard with the casing. The layout of the CD-ROM and hard drive is bad. CD-ROM should be placed at the top.
Messy wires should be tied and trimmed. In order not to be a barrier of air circulation inside the computer.
Clearly, if the computer is rarely cleaned. Dust can degrade computer performance. Highly recommended to clean the computer at least once a month.