Which procedure is recommended when cleaning inside a computer?

  • Invert the can of compressed air while spraying.
  • Hold the CPU fan to prevent it from spinning and blow it with compressed air.
  • Remove the CPU before cleaning.
  • Clean the hard drive heads with a cotton swab.
    Answers Explanation & Hints:

    Hold the fan blades in place when you clean the inside of the computer with compressed air to prevent over-spinning the rotor or moving the fan in the wrong direction.