Troubleshooting methods of computer peripherals
- 1. TROUBLESHOOTING METHODS OF COMPUTER PERIPHERALS • Analysis • Problem replication/identification • Action plan • Implementation • Testing • Documentation • Follow up
- 2. TROUBLESHOOTING • Troubleshooting is a form of problem solving. What is Troubleshooting?
- 3. HARDWARETOOLS A small paint brush - Used to brush off the dust Antistatic straps -To protect your computer from static electricity Screwdriver - Philips, standard and torx screwdrivers Compressed air - Blows away dust Handheld vacuum - Gathers dust in your pc
- 4. SOFTWARETOOLS Antivirus - Scanning and clean up of virus Suite of utilities - Help you monitor the health of your pc Firewall - Keep bad people away from your computer
- 5. BASICTROUBLESHOOTING GeneralTroubleshooting Power issues Display issues Keyboard and mouse issues Freezing and crashing Printer issues Sound issues Network issues Error messages Login issues
- 6. GENERALTROUBLESHOOTING STEPS It is plugged in? Is the monitor turned on? Reboot! Check that all cords and cables are connected tightly Check that all cords and cables are connected to the correct port Have you added a new device recently ?Try disconnecting it
- 7. COMMON PROBLEMS Keyboards and mouse issues Cables issues Disk drives Overheating Power issues Windows errors Device drivers viruses
- 8. CABLES ISSUES Loose Bent pins Failures Out of ports Organization
- 9. POWER PROBLEM Blackout - complete power failure Brownout – power “sags” below acceptable levels causing computer to reboot Surge – sudden surge of power
- 12. VIRUSES Difficult to fix Easy to prevent Important to understand and be aware of Common types The best defense
- 13. POST SEQUENCE • POST (Power -On -Self -Test ) • POST is stored in ROM BIOS on the motherboard. • Every time the computer is turned on, it runs through a Power-On Self-Test (POST). • POST indicates the fault to the user in four different ways: 1. Check point 2. Beeps 3. Error code displays 4. Detailed error messages
- 14. BEEPS CODES The Beep pattern is telling you what part of the hardware is failing. Most common beep codes:- No beep:- no power, loose card 1 short beep:- Normal POST, Computer is ok. 2 short beep:- POST error, review screen for error code. Continuous beep:- RAM problem
- 15. CLEANINGTOOLS Canned air A small brush Lint-free foam cleaning swabs Antistatic wrist-grounding strap Foam tape Silicon-type lubricant Computer vacuum cleaner Low-volatile room-temperature vulcanizing sealer
- 16. PREVENTIVE MAINTENANCE OF MONITOR Monitor fails due to following reasons: 1. Open circuit or disconnection inside monitor 2. Short circuit inside the monitor 3. Display is not stable 4. Diagonal lines are present 5. Screen is flickering 6. No control over brightness 7. Focus is not proper 8. No effect of vsync and hsync
- 17. PREVENTIVE MAINTENANCE Backup ant data or important files Delete all temporary files Empty the recycle bin Check for and install antivirus software updates Run a defragmentation program Secure password Maintain your hard disk Clear the cache Clean up New equipment
- 18. CONCLUSION These recourses are intended to help you develop skills to improve. A good understanding of hardware and software tools, post sequence, many issues in computer, preventive maintenance, basic troubleshooting steps ,etc…