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Integrated Technology
Unit 4- 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.
Objectives
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
Why Keep the PC Healthy?
What makes the screen dirty?
LCD/LED screens (Non-glass)◦ NEVER spray liquid or
Windex! Ruins the anti-glare coating Can leak into monitor
Dirty Screen
Pre-moistened Wipes
Spray & Cloth◦ Spray liquid onto
microfiber cloth
Use on LCD/LED, cell phone screen, Tablets, photo frames, etc.
Cleaning the Screen
What makes the keyboard dirty?
Could cause it not to work
Dirty Keyboard
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
Cleaning the Keyboard
Can get sticky & dusty on bottom◦ Causes erratic movement
Sticky/dirty on top
Dirty Mouse
Review
Dust & dirt build-up Clogged fans
Dirty Computer Case
Use compressed air◦ DON’T blow dust inside PC!◦ Dust keeps PC hot
Vacuum outside only
Wipes to clean surface
Cleaning the Case
Take in air on bottom, expel heat out back
Cooling Stand◦ Keeps cool air going in◦ Prevents overheating
Padded Bags◦ Protect when carrying
Laptop Care
Review
Protect from Theft Kensington Lock Secure physical devices Businesses or Personal use
Organizing Cables Organizing cables under desk Velcro wire-ties
Shop for maintenance accessories
Project
Allows many plugs into one Not recommended!
Power Strip
Surge or Spike◦ Too much electricity◦ Lightning strike or power
fluctuation
Power Outages◦ No electricity
Protect from Electrical Damage
What’s a surge? 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◦ $$ protection warranty
Surge Suppressor
Surge Protector Features
# of Outlets
Length of cord
# of Joules
Connected equipment warranty $$
UPS Uninterruptable Power
Supply
Battery backup PLUS surge protection
Will power equip until you can save & shutdown◦ 10-20 min.
Find a single outlet surge protector for your laptop
Find a 6-8 outlet surge protector for computers
Find a surge/UPS strip with at least 10 minutes of backup time
Project
Don’t use easy, common words Mistakes:
Passwords
Most common password is…password◦ Also 123456
Tips & Advice:
Password Tips
Top 25 worst passwords of
2011
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
Anti-virus Protection
Office Max◦ McAfee Antivirus Plus 2013 1 & 3-user◦ Kaspersky Internet Security 3-user
Staples◦ Norton Internet Security 2013 3-user◦ McAfee Total Protection 2013
Best Buy◦ Kaspersky Internet Security 3-user
Walmart◦ McAfee Antivirus Plus 2013 3-user◦ Norton Antivirus 2013 3-user
Anti-virus Software Project
What files are important to you?
Data is very valuable
Backup data◦ External drive◦ Online
Protect Your Data
The files can be saved on a flash drive, CD, DVD, or a hard drive.
Backup Your Data
Win 7 Mac
Review
Common Problems
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
Hardware Issues
Display problems◦ Check power◦ Check video cable
Loss of network◦ Loose cable◦ Wireless down
Incompatible device◦ Check if it’s plugged in
Hardware Issues
Routine Maintenance Visual Inspection
◦ Check cables Plugged in Good condition Inside computer too
Care for Removable Media
Avoid extreme temperatures
Don’t touch media surface
Hold optical disks at edges
Keep disks in case when moving them
Useful Life Personal PC: 3-5 years Special Recycle
◦ Check with town/county Donate
Review
Integrated Technology
Unit 4- Maintaining & Protecting Hardware
