hLR

1. THE COMPUTER
a computer system is made up of various elements
each of these elements affects the interaction
• input devices – text entry and pointing
• output devices – screen (small&large), digital paper
• virtual reality – special interaction and display devices
• physical interaction – e.g. sound, haptic, bio-sensing
• paper – as output (print) and input (scan)
• memory – RAM & permanent media, capacity & access
• processing – speed of processing, networks

2. How many computers …
in your house?
• PC
• TV, VCR, DVD, HiFi,
cable/satellite TV
• microwave, cooker, washing
machine
• central heating
• security system
can you think of more?
in your pockets?
• PDA
• phone, camera
• smart card, card with
magnetic strip?
• electronic car key
• USB memory
try your pockets and bags

3. EQUIPMENT MAINTENANCE
Maintenance refers to Actions necessary for retaining or restoring a piece of
equipment, machine, or system to the specified operable condition to achieve
its maximum useful life.
There are two major maintenances performed on computers;
Preventive- Maintenance performed on equipment are not necessarily when
they are faulty but to make sure breakdowns are minimized. It involves
changes made to a system to reduce the chance of future system failure
Corrective - diagnosing and fixing errors, possibly ones found by users

4. HARDWARE MAINTENANCE
Tasks that are performed during a hardware maintenance program:
• Remove dust from fan intakes.
• Remove dust from the power supply.
• Remove dust from components inside the computer.
• Clean the mouse and keyboard.
• Check and secure loose cables

5. SOFTWARE MAINTENANCE
The purpose of this is to verify that installed software is current.
Use the tasks listed as a guide to create a software maintenance schedule that
fits the needs of your computer equipment:
• Review security updates.
• Review software updates.
• Review driver updates.
• Update virus definitions
• Scan for antivirus
• Remove unwanted programs
• Scan harddrive for errors
• Defragment harddrive

6. Benefits Of Preventive Maintenance
The following are the benefits of preventive maintenance:
• Increases data protection
• Extends the life of the components
• Increases equipment stability
• Reduces repair costs
• Reduces the number of equipment failures

7. Computer Troubleshooting

8. Topics
• My Computer is Slow
• Internet
• Printers

9. My Computer is Slow
• Disk Cleanup
• Ccleaner/Third-Party Application
• Defragmentation
• Task Manager (Ctrl+Alt+Del)

10. Internet
• Deleting Browsing History
• Setting Home Page
• Toolbars/Popup Blockers
• Favorites
• Wired and Wireless Connection check
• Reset of Routers
• Internet Provider Downtime
• Modem Problem

11. Troubleshooting offline printer problems
Start by running the printer offline troubleshooter in the
Get Help app. Get Help automatically runs diagnostics and
takes the correct steps to fix most printer issues.

12. Software Tools for Maintaining Your
Computer Hardware
• Utility Programs exist that can help diagnose and solve
computer hardware problems
• Four major problem areas where utility programs are
helpful
• Finding and fixing problems
• Testing Input/Output peripherals
• Testing RAM, motherboard, video cards
• Recovering deleted files or fixing damaged disks
• Improving computer performance
• De-fragmenting a disk (Packs all files closer together)
• Preventative maintenance
• Troubleshooting
• Locates incompatible programs