What are the methods of how to maintain computer performance and prolong the life of

PC to regular maintenance, so as to ensure the performance of the computer and how to prolong its life. The following computer maintenance method is very simple, we can follow suit.
　　First, on a regular basis to the computer dusting, vacuuming where the display is the easiest, if dusty environment, then we must do the cleaning work, the use of computers to keep dry and clean room.
　　Second, the right to switch, switch machine must first peripheral hosts, if the order wrong, then the damage to the computer is very large.
　　Third, before using the CD-ROM or floppy disk, the first anti-virus, even after the virus once installed, it can be used to ensure safety.
Finally, if the system exits abnormally or power failure, it is best to conduct a thorough hard disk scan, fix the error.