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Troubleshooting a Malfunctioning PC: Recognizing and Resolving Common Issues

This presentation equips you with essential skills for troubleshooting common PC malfunctions, particularly those related to the hard drive interface and keyboard issues. Learn to recognize symptoms of failures, distinguish between control and data malfunctions, and follow a structured process to diagnose and fix problems like erratic keyboards and slow hard drives. Essential precautions and cost considerations for repairs are also covered, enabling you to make informed decisions when faced with hardware failures.

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Troubleshooting a Malfunctioning PC: Recognizing and Resolving Common Issues

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  1. Presentation 36 – Troubleshooting a Malfunctioning PC

  2. Objectives At the end of this presentation, you will be able to:

  3. Recognize several symptoms that are caused by failures in the hard drive interface. • Recognize the difference between a control malfunction and a data malfunction.

  4. Precautions • Turn off the equipment before making any hardware changes. • After changing anything, reboot the computer so that the change can take effect.

  5. Q R A F S W T G E Y D H Z X C V B N Keyboard Problems

  6. Error message indicate that no keyboard is connected. Q R A F W T G S E Y H D Z X C V B N Symptom

  7. Troubleshooting Process • Check keyboard connection. • Substitute a known-good keyboard. • Try the suspect keyboard on known-good computer. • If the problem is the keyboard, replace or repair. • If the problem is in the motherboard, replace or repair.

  8. Replace or Repair? • How expensive is the Field Replaceable Unit (FRU)? • How long will it take to repair? • Are replacement parts available? • What is your charter?

  9. How expensive is the Field Replaceable Unit (FRU)?

  10. How long will it take to repair?

  11. Are replacement parts available?

  12. What is your charter?

  13. No keys function. Q R A F W T G S E Y H D Z X C V B N Symptom

  14. Troubleshooting Process • Substitute known-good keyboard. • Try suspect keyboard on known-good computer. • If problem is keyboard, replace or repair. • If problem is in motherboard, replace or repair.

  15. A key works intermittently. Q R A F W T G S E Y H D Z X C V B N Symptom

  16. Troubleshooting Process • Try cleaning the keyboard. • Blow out with compressed air or vacuum with static-safe vacuum cleaner. • Weigh your time and chances of success against the cost of a new keyboard.

  17. Mouse Problems

  18. Buttons are erratic. Symptom

  19. Cursor moves erratically. Symptom

  20. Cursor appears on the screen but will not move. Symptom

  21. Mouse driver does not load. Symptom

  22. Floppy Drive Problems

  23. A newly installed floppy does not work. Symptom

  24. You can’t boot from the new floppy. Symptom

  25. Hard Drive Problems

  26. Hard drive performance has been slowing down over time. Symptom

  27. PC will not boot from the hard drive. Symptom

  28. Possible Problems: • The SETUP configuration has been changed or lost. • One or more of the OS boot files on the hard drive may be corrupt or missing. • The partition table or boot sector may be corrupt. • The hard drive may have a mechanical or an electronic malfunction.

  29. The SETUP configuration has been changed or lost.

  30. One or more of the key files on the hard drive may be corrupt or missing.

  31. The partition table or boot sector may be corrupt.

  32. The hard drive may have a mechanical or an electronic malfunction.

  33. End

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