Which procedure is recommended when cleaning inside a computer?

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.