Cleaning of outer surfaces of a computer can be done with soap and water as long as the solution does not enter the internal parts of the computer. The solution should be applied with a lint-free cloth. The cleaning should be followed with an anti-static spray that can be made out of water and fabric softener.
Internal dust can be cleaned with canned air, a soft brush or anti-static vacuum. Anti-static vacuums are specially grounded to prevent static discharge like regular vacuums. Dust can contribute to overheating problems. Making sure that all expansion slot covers are in place can reduce dust buildup. Missing covers can also disrupt the airflow design of the case and cause overheating problems. Additional fans can be added to help cut down on internal temperature problems. Computer equipment should not be placed in areas of extreme temperature or humidity.