Maintaining and troubleshooting computer systems
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Maintaining and Troubleshooting Computer Systems. Computer Technology (S1 Obj 1-3). Computer Protection. As the use of computers has grown in volume and importance, protecting computer systems and the information they hold has become increasingly important.

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Maintaining and troubleshooting computer systems

Maintaining and Troubleshooting Computer Systems

Computer Technology

(S1 Obj 1-3)


Computer protection
Computer Protection

  • As the use of computers has grown in volume and importance, protecting computer systems and the information they hold has become increasingly important.

  • There are 3 ways to protect your computer

    • Against theft

    • Against physical damage

    • Data Security


Protecting a gainst theft
Protecting Against Theft

  • Safeguards include:

    • Choose a secure location

      • Don’t leave it in the front seat of your car

      • Don’t leave unattended

      • Lock room or building (Motion detection alarms)

    • Use security locks

      • Used to anchor laptop to a fixed structure

      • Security lock slot can be found in 99% of computers

    • Mark equipment with identification marks

      • Ultra-V Pens

      • Computer security or asset labels

      • Record serial numbers at a separate location

Theft of and damage to computers (desktop, laptop, mobile device) is a serious problem.


Protect computer against physical damage
Protect Computer AgainstPhysical Damage

  • Improper Handling

    • Dropping: Use a padded case

    • Spilling: Use spill proof container or avoid food and drinks near computers

  • Overheating

    • Ensure proper cooling and ventilation

    • Accumulation of dust and debris could damage motherboard components

  • Humidity

    • Operate safely between 50-90 degrees

    • Too much moisture can short circuit wiring and cause corrosion


Protect computer against physical damage1
Protect Computer AgainstPhysical Damage

  • Electrical Damage

    • Caused by power surges, Power fluctuations, Static electricity

    • Use a Surge Protector (An electrical device inserted in a power line to protect computer hardware from sudden fluctuations in power)

    • Do not run motors or other heavy duty equipment (copiers, air conditioners, etc.) on the same circuit as your computer!


Data security
Data Security

Computer failure is the #1 reason for data loss


Protect against data loss
Protect against Data Loss

  • Protect your data!

  • Backup data

    • Flash Drive

    • CD’s or DVD’s

    • External hard drive

    • Cloud

  • Password Protect

    • Should not be easy to guess

    • Keep private

  • Prevent remote access

    • Firewalls

    • Secure wireless access

  • Consult a professional if necessary!


Troubleshooting common hardware related pc problems
Troubleshooting CommonHardware Related PC Problems

  • Troubleshooting means to find the source of a computer problem and fix it, usually through the process of elimination

  • Check electrical power source first

    • Plugged in securely?

    • Power to the surge protector?

  • Second, check the connections of peripheral devices

    • Make sure cables are secure

    • Unplug and reconnect the peripherals

  • Finally, if all lese fails,

    restart the computer


Preventative maintenance by user
Preventative Maintenanceby User

  • Clean the PC and peripherals

    • Monitor, keyboard, mouse, vents

    • Avoid excess liquid to ensure electronics don’t get wet

    • Small bits of paper, dust or other debris could cause jams or ink/toner smears on printed papers

  • Replace or upgrade broken components

    • Replace ink/toner cartridges when empty

    • Replace peripherals

  • Virus Scan: configure your computer to update and run a virus scan daily or at least weekly


Specialized maintenance
Specialized Maintenance

  • Some maintenance or repair should be performed by a computer professional

    • Replacing the power supply or opening the power supply case

    • Replacing other electrical components

    • Replacing or upgrading the processor

    • Replacing or upgrading the hard drive

    • Replacing or adding RAM (the best value for increasing processor speed)

    • If you are uncertain how to upgrade or repair your computer, consult a professional!



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