1. Computing Fundamentals Unit 3- Maintaining & Protecting Hardware

2. Objectives • Identify the importance of protecting computer hardware from theft and damage. • Explain how to protect data. • Identify environmental factors that can cause damage to computer hardware & media. • Identify how to protect computer hardware from power loss. • Identify common problems associated with computer hardware. • Identify routine maintenance tasks. • Define problem solving & identify the steps. • Identify criteria for selecting a computer.

3. Protect from Theft • Secure physical devices • Businesses or Personal use

4. Protect From Damage • Cooling Stand • Padded Bags

5. Protect Your Data • Data is very valuable to businesses • Can occur in theft & when old system are trashed • Encrypt data • On computer • Keeps data private w/out key • Backup data • Daily • On-site & off-site

6. Backup on Windows 7 • System image and Files • Image= Windows, Programs, Settings & Files • Used if entire drive stops working • The system image must be saved on a hard drive. • Files= just files • The files can be saved on a flash drive, CD, DVD, or a hard drive.

7. Environmental Protection • Temperature • Not too hot • Humidity • Can cause rust • Water • Magnetic fields • Can erase HD • Static electricity • Can damage components • No rugs

8. Protect from Damage • Protect Hardware • Power surge or spike • Power outage • Theft • Protect Files • Online backup • CD/DVD backup

9. An increase in voltage significantly above the designated level Surge Protector diverts extra voltage like a valve What’s a surge?

10. Surge Suppressor • AKA Surge Protector • Different from Power Strip • Check Joule rating • More joules better protection • Has warranty $$ • Noise Filter

11. Uninterruptable Power Supply Battery backup & surge Will power equip until you can save & shutdown UPS

12. Review • What device will keep your laptop from overheating? • Cooling Pad • What security measure can protect transmitted data? • Encryption • What device will allow you time to save & shutdown your PC when the power goes out? • UPS • An increase of voltage above normal levels is called what? • Spike or a surge

13. Projects • Compare Surge Protectors • How to Backup Data • Surge Homework

14. Hardware Issues • Crashed HD • Overheat, dropped, shaken, wear out • Damaged media • Scratched CD/DVD • Dusty flash drive, banged around • Printer Problems • Paper jams • Low toner

15. Hardware Issues • Display problems • Check power • Check video cable • Bad driver • Loss of network • Loose cable • System down • Incompatible device • New device needs driver • Check if it’s plugged in

16. Routine Maintenance • Organizing cables under desk • Velcro wire-ties

17. Routine Maintenance • Visual Inspection • Check cables • Plugged in • Good condition • Inside computer too

18. Routine Maintenance • Dust • Clogs fans • Fans cools parts down • Overheat= shutdown • Compressed Air

19. Dusty!

20. Routine Maintenance • Wipes • For monitors • No tissues or towels (lint/scratch) • No glass cleaners

21. Clean Keyboard & Mouse • Keyboard • Turn upside & shake • Compressed air • Unplug, spray with water, shake out & dry • Mouse • Ball rollers dirty • Wipe bottom of optical

22. Care for Removable Media • Keep away from electrical fields (TV/monitor) • Avoid extreme temperatures • Don’t touch media surface • Hold optical disks at edges • Keep disks in case when moving them

23. Review 1

24. Review 2

25. Projects • Routine Maintenance Costs • Find Your Specs

26. Buy or Upgrade • Consider the costs to upgrade versus a new PC • You need 2GB RAM & a bigger hard drive • RAM: $50 • Hard Drive: $100 • New computer: $500

27. What to consider Who is using it? What will it be used for? List the tasks, software Check requirements Portability or not MAC or PC Brand/Reliability Storage devices Peripherals- how many? Warranty/Support Buying a Computer

28. Buying a Computer • Support • Company will help you troubleshoot • May charge per call/per hour • Warranty • Written guarantee • If product doesn’t meet specs, manufacturer will repair/replace • Does NOT cover your damage

29. Upgrading Components • Add RAM • New keyboard, mouse (connections) • Drives/Cards • May require pro to install

30. Useful Life • Public- 3-5 years • Special Recycle • Check with town/county • Donate

31. Review

32. Project • Buying a Computer • Recycling

33. Troubleshooting Example • On boot, message popup • Unable to load library wxfw.dll. Attempted to load <Key notfound>\wxfw.dll.Error code:126 • Search online for wxfw.dll • Found it was from a Desktop Weather Program • Found program & uninstalled • Reboot & no error

34. Troubleshooting • What is the problem • Check Basic Solutions • Cables, restart • Look or research for help & support • Talk to a technician • Follow their instructions • Confirm it’s fixed • Document problem/solution

35. Troubleshooting Scenarios- Check the basics • The entire computer has completely frozen up. I can't click anywhere on the screen. I can't even use the Start button to shut it down. • Ctrl + Alt + Delete • I press print & the printer does not respond at all. • Check the cables; what other solutions?

36. Review • Which device protects a computer from electrical surges? • Surge suppressor • Which component has an RJ11 jack? • Modem • Which component has a 15 pin female connector? • VGA

37. Review • A legacy printer would be plugged into which port? • Parallel • When troubleshooting, what would a basic solution be? • Checking the cables • What is the last step in troubleshooting? • Confirm the problem is fixed

38. Review 1

39. Review 2

40. Computing Fundamentals Unit 3- Maintaining & Protecting Hardware