During IT operation, computer running for longer hours continuously day by day. A computercontaining accumulated dust and debris may not run properly. Dust and debris will accumulate as a result of air cooling.It also cause computer run out of grease on proccessor. This probably cause your computer running slow or overheat. It’s neccessary for us to service the computer in order to keep it in good condition. This also helps extend the life span of the computer. And it definately cut down the cost compare purchase a new one when come to broken.