Every year your computer should be cleaned out completely. The inside of the case needs to have all of the dust and pet hair removed. The harddrive should be checked for errors and defragmented. With our "Spring Cleaning Special" we take your computer apart and clean all of the dust and pet hair out of the inside. We also check all of the fans inside the computer for possible failure. (If the CPU fan quits working the computer will start to act funny and may quit working all together)