Unit 3- Maintaining & Protecting Hardware

 Identify the importance of keeping a computer clean.  Explain what is needed to clean a PC.  Identify the importance of protecting computer hardware from theft and damage.  Make a secure password.  Protect a computer against viruses.  Explain how to backup data.  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.

 How much do computers cost?  You want to protect your investment  Easy to maintain ◦ Keep it physically clean ◦ Protecting it from bad software ◦ Protect/Backup your files

 What makes the screen dirty?  LCD/LED screens (Non-glass) ◦ NEVER spray liquid or Windex!  Ruins the anti-glare coating  Can leak into monitor

 Pre-moistened Wipes  Spray & Cloth ◦ Spray liquid onto microfiber cloth  Use on LCD/LED, cell phone screen, Tablets, photo frames, etc.

 What makes the keyboard dirty?  Could cause it not to work

 Unplug, turn upside down & shake ◦ Use compressed air  Use wipes  Spill? ◦ Disconnect, turn upside down to drain  Sticky?  Hold on side & rinse  Drain for 2 days

 Can get sticky & dusty on bottom ◦ Causes erratic movement  Sticky/dirty on top

 Use wipes

 Your laptop screen is dirty. Why should you NOT use Windex to clean it? ◦ Ruins the anti-glare coating & can leak inside  What can be used to get food particles & dust out of your keyboard? ◦ Compressed air  When cleaning an LCD screen with a liquid pump spray, how do you apply the spray? ◦ Spray onto the cloth

 Dust & dirt build-up  Clogged fans

 Use compressed air ◦ DON’T blow dust inside PC! ◦ Dust keeps PC hot  Vacuum outside case only ◦ Anti-static vacuum inside  Wipes to clean surface

 Keep the expensive laptop clean!

 How can dust damage your computer? ◦ Clogs up fans; causes overheating  Vacuuming the inside of a computer with a regular vacuum cleaner can cause what kind of damage? ◦ Static electricity can damage components  When using compressed air to clean dust from computer fans, how should you do this? ◦ Blow dust outside of the computer, not in

 Organizing cables under desk  Velcro wire-ties

 Take in air on bottom, expel heat out back  Cooling Stand ◦ Keeps cool air going in ◦ Prevents overheating  Padded Bags ◦ Protect when carrying

 Kensington Lock  Secure physical devices  Businesses or Personal use

 Tracking Software ◦ Identify location of computer ◦ Alarm sounds ◦ Lock device remotely ◦ Erase data remotely ◦ Remote camera activation

 Shop for maintenance accessories

 Allows many plugs into one  Not recommended!

 Surge or Spike ◦ Too much electricity ◦ Lightning strike or power fluctuation  Power Outages ◦ No electricity

 An increase in voltage significantly above the designated level  Surge Protector diverts extra voltage like a valve

 AKA Surge Protector ◦ Better than Power Strip  What to look for? ◦ # of outlets ◦ Joule rating  More joules better protection ◦ Cord length ◦ Noise filter ◦ $$ protection warranty

# of Outlets Length of cord # of Joules Connected equipment warranty $$

 Uninterruptable Power Supply  Battery backup PLUS surge protection & noise filter  Will power equip until you can save & shutdown ◦ min.

 Find a single outlet surge protector for your laptop  Find a 6-8 outlet surge protector (strip or wall) for computers with at least 2500 joules  Find a surge/UPS strip with at least 10 minutes of backup time  Comparing Surge Protectors Handout (group)  Surge Protector Homework Handout

 Don’t use easy, common words  Mistakes:

 Most common password is…password ◦ Also  Tips & Advice: Top 25 worst passwords of 2013 Strong Password Checker from Microsoft

 Prevents virus install & helps remove it  Enable auto-update ◦ New virus’ made everyday  Be careful what you download ◦ AV might not catch them all  Name some AV software

 Office Max ◦ McAfee Antivirus Plus & 3-user ◦ Kaspersky Internet Security 3-user  Staples ◦ Norton Internet Security user ◦ McAfee Total Protection 2013  Best Buy ◦ Kaspersky Internet Security 3-user  Walmart ◦ McAfee Antivirus Plus user ◦ Norton Antivirus user

 What files are important to you?  Data is very valuable  Backup data ◦ External drive ◦ Online

 Image= Windows, Programs, Settings & Files ◦ Used if entire drive stops working ◦ The system image must be saved on a hard drive.  Files= your pics, songs, files ◦ The files can be saved on a flash drive, CD/DVD, external hard drive, network. Win 7 ImageWin 7 Files Win 7Mac

 How to Backup Data & Images ◦ In groups of 2 ◦ Make a 1-2 page EASY instruction sheet with pictures ◦ Keep it organized with pictures under each step or to the right ◦ After checked, save as a PDF

 Which is a better password? ◦ Mcdonalds1 ◦ puppydog ◦ ◦ 28Cr38teR_!  What 2 jobs does AV software perform? ◦ Prevents virus install & removes it  What 2 things can you back up on the PC? ◦ Image (programs & settings) and files

 What are some common problems people have with computers?

 Crashed HD ◦ Overheat, dropped, shaken, wear out  Damaged media ◦ Scratched CD/DVD ◦ Dusty flash drive, banged around  Printer Problems ◦ Paper jams ◦ Low ink or toner

 Display problems ◦ Check power ◦ Check video cable  Loss of network ◦ Loose cable ◦ Wireless down  Incompatible device ◦ Check if it’s plugged in

 Visual Inspection ◦ Check cables  Plugged in  Good condition  Inside computer too

 Avoid extreme temperatures  Don’t touch media surface  Hold optical disks at edges  Keep disks in case when moving them

 Personal PC: 3-5 years  Special Recycle ◦ Check with town/county  Donate

 Consider the costs to upgrade versus a new PC  8GB RAM= better performance; you have 4GB ◦ You need 4GB more RAM & a 1TB hard drive ◦ RAM: $50 ◦ Hard Drive: $100 ◦ New computer would cost: about $500  Is it worth it? Is your PC in good shape & performing well?

 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

Product SupportProduct Warranty  Tech support (for the hardware, not OS)  Company will help you troubleshoot  Free for a time period  Then, may charge per call/per hour  Written guarantee for a time period  If product doesn’t work, manufacturer will repair/replace  Normal wear & tear  Does NOT cover damage you do

 New keyboard, mouse (check connections) ◦ Anyone can add themselves  Add RAM or Drives/Cards ◦ May require pro to install

 Buying a Computer ◦ Each student will get a budget amount ◦ Meet requirements given ◦ Add to your “My Computer” PPT  Slide 1= budget & requirements  Slide 2= brand, model, specs, picture, price  Recycling ◦ Look up your town’s/county’s computer recycling program ◦ Describe what to do with items

 What do you do when your computer has a problem? ◦ Nothing ◦ Call someone you know ◦ Look it up ◦ Fix it yourself ◦ Buy a new computer  You should troubleshoot!

 On boot, message popup ◦ Unable to load library wxfw.dll. Attempted to load \wxfw.dll.Error code:126  Search online for wxfw.dll  Found it was from a Desktop Weather Program  Found program & uninstalled  Reboot & no error

1. Identify the problem (What’s the problem?) 2. Check Basic Solutions ◦ Cables plugged in, just restart it, out of ink 3. Research for help & support ◦ Internet, boards, tech support site 4. Talk to a technician & follow their instructions 5. Confirm it’s fixed 6. Document problem/solution

PROBLEM: OS does not start or starts and freezes Cause & Solution? PROBLEM: OS does not start or starts and freezes Cause & Solution? PROBLEM: Newly installed software doesn’t start Cause & Solution? PROBLEM: Newly installed software doesn’t start Cause & Solution? PROBLEM: Beeps during POST Cause & Solution? PROBLEM: Beeps during POST Cause & Solution? PROBLEM: Hard drive makes unusual sounds Cause & Solution? PROBLEM: Hard drive makes unusual sounds Cause & Solution? PROBLEM: Computer does not start at all Cause & Solution? PROBLEM: Computer does not start at all Cause & Solution?

 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?

 Which device protects a computer from electrical surges? ◦ Surge suppressor  What rating on a surge protector identifies the amount of extra electricity it can handle? ◦ Joules  UPS stands for what? ◦ Uninterruptable power supply  What is the purpose of a UPS? ◦ Gives you time to save files & safely shut down when the power goes out

 When troubleshooting, what would a basic solution be? ◦ Checking the cables to see if they’re plugged in  What is the last step in troubleshooting? ◦ Document the problem/solution  T or F. When you have a problem, you should contact tech support immediately. ◦ False

Unit 3- Maintaining & Protecting Hardware