preventive maintenance

• Preventive maintenance


  The practice of routinely taking measures in hardware administration that reduces the risk of hardware failures
• Preventive maintenance


  • Improves quick recovery in the event that a failure does occur
• Maintenance activities


  1. Performing diagnoses on different hardware components such as circuit boards and memory

  2. Replacing any components that show signs of excess wear

  3. Keeping hardware components clean from dust to reduce overheating and hardware failures
• Ways of cleaning dust off the computer

  • Cloth
  • Chemical cleaners
  • Vacuum cleaners
• Soft cotton cloth


  Can be used to clean the outside of the computer case
• Microfiber cloth


  Effective in removing dust without damaging screens
• Microfiber cloth is made from a high-quality material that absorbs and removes all fingerprints, smudges, oils, and dust from the screen
• Use of cloth as a first step before applying any liquid sanitizing wipe or screen cleaner is recommended
• Chemical cleaners


  Can be used to clean computer screens
• Alcohol-Free Sprays


  • Koala Cleaner
• Alcohol-Free Sprays such as Koala Cleaner are safe for all kinds of screens and can be used on all screens from tablets to laptops
• Dust on the outside of a computer

  Can travel through cooling fans to the inside part of the computer
• Accumulated dust


  Prevents the flow of air and reduces the cooling of components
• Hot computer components


  Are more likely to break down
• Removing dust from the inside of a computer

  Using a combination of compressed air, a low-air-flow vacuum cleaner, and a small lint-free cloth
• It is good to make it a regular habit like monthly to clean computers' air ventilators, connection ports, and keyboards with a vacuum cleaner
• Computer virus


  A type of computer program that when executed replicates itself by modifying other computer programs and inserting its own code
• How computers may be infected with viruses

  1. Connected to the Internet

  2. Someone else's flash disk is inserted into a computer system
• Virus infection is not detected until it creates a problem on the computer
• Antivirus/Anti-malware


  A computer program used to prevent, detect and remove malware
• Types of antivirus software

  • Freeware
  • Commercial
• Free antivirus software


  • AVAST
  • AVG
  • AVIRA
  • Bitdefender