1. MAINTAINING AND TROUBLESHOOTING COMPUTER SYSTEMS UNIT 6

2. COMPUTER PROTECTION As the use of computers has grown in volume and importance, protecting computer systems and the information they hold has become increasingly important.

3. PROTECTING AGAINST THEFT Theft of and damage to computers (desktop, laptop, mobile device) is a serious problem. Safeguards include: Choose a secure location Don’t leave it in the front seat of your car Don’t leave it unattended Lock room or building

4. PROTECTING AGAINST THEFT Use security locks Used to anchor laptop to a fixed structure Security lock slot can be found in 99% of computers Mark equipment with identification marks Ultra-V Pens Computer security or asset labels Record serial numbers at a separate location.

5. PROTECT COMPUTER AGAINST PHYSICAL DAMAGE Improper Handling Dropping: Use a padded case. Spilling: Use spill proof containers or avoid food and drinks near computers.

6. PROTECT COMPUTER AGAINST PHYSICAL DAMAGE Overheating Ensure proper cooling and ventilation Accumulation of dust and debris could damage motherboard components Humidity Operate safely between 50-90 degrees Too much moisture can short circuit wiring and cause corrosion

7. PROTECT COMPUTER AGAINST PHYSICAL DAMAGE Electrical Damage Caused by power surges, power fluctuations, static electricity Use a surge protector (An electrical device inserted in a power line to protect computer hardware from sudden fluctuations in power.) Do not run motors or other heavy duty equipment (copiers, air conditioners, etc.) on the same circuit as your computer.

8. DATA SECURITY Computer failure is the #1 reason for data loss

9. PROTECT AGAINST DATA LOSS Protect your data! Backup Data Flash drive, CDs or DVDs External hard drive, Cloud storage Password Protect Should not be easy to guess Keep private Prevent remote access Firewalls Secure wireless access

10. TROUBLESHOOTING COMMON HARDWARE RELATED PC PROBLEMS Troubleshooting means to find the source of a computer problem and fix it, usually through the process of elimination. Check electrical power source first Plugged in securely? Power to the surge protector?

11. TROUBLESHOOTING COMMON HARDWARE RELATED PC PROBLEMS Second, check the peripheral device connections. Make sure cables are secure Unplug and reconnect the peripherals Finally, if all else fails, restart the computer.

12. PREVENTATIVE MAINTENANCE BY USER Clean the PC and peripherals Monitor, keyboard, mouse, vents Avoid excess liquid to ensure electronics don’t get wet Small bits of paper, dust or other debris could cause jams or ink/toner smears on printed paper

13. PREVENTATIVE MAINTENANCE BY USER Replace or upgrade broken components Replace ink/toner cartridges when empty Replace peripherals Virus scan: configure your computer to update and run a virus scan daily or at least weekly

14. SPECIALIZED MAINTENANCE Some maintenance or repair should be performed by a computer professional Replacing the power supply or opening the power supply case Replacing other electrical components Replacing or upgrading the processor Replacing or upgrading the hard drive Replacing or adding RAM (the best value for increasing processor speed) If you are uncertain how to upgrade or repair your computer, CONSULT A PROFESSIONAL!