1 / 25

A+ Guide to Managing and Maintaining your PC, 6e

A+ Guide to Managing and Maintaining your PC, 6e. Chapter 3 PC Repair Fundamentals. PC Support Technician Tools. Help you maintain a computer Help you diagnose and repair computer problems Criteria for choosing tools: Level of PC support you expect to provide Amount of money you can spend

Olivia
Télécharger la présentation

A+ Guide to Managing and Maintaining your PC, 6e

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. A+ Guide to Managing and Maintaining your PC, 6e Chapter 3 PC Repair Fundamentals

  2. PC Support Technician Tools • Help you maintain a computer • Help you diagnose and repair computer problems • Criteria for choosing tools: • Level of PC support you expect to provide • Amount of money you can spend • Some essential tools: • Ground bracelet, ground mat, or ground gloves • Torx screwdriver set • Recovery CD, DVD, or floppy disk for target OS • Store tools in toolbox for PC troubleshooting A+ Guide to Managing and Maintaining your PC, 6e

  3. Figure 3-1 PC support technician tools A+ Guide to Managing and Maintaining your PC, 6e

  4. Recovery CDs • Used to boot a system • Also used to repair and reinstall Windows • Primary recovery CD sources • PC manufacturer (preferred) • Operating system distributor, such as Microsoft • Some hard drives have a hidden recovery partitions • A hidden partition can be used to reinstall Windows • A utility for creating recovery CDs may be provided • Access hidden utilities by pressing a Fn key at startup A+ Guide to Managing and Maintaining your PC, 6e

  5. Figure 3-2 Windows Setup CD and Windows Recovery CDs for a notebook computer A+ Guide to Managing and Maintaining your PC, 6e

  6. Loop-Back Plugs • Used to test various ports • Some port types: serial, parallel, USB, network • How to use a loop-back plug • Plug in the loop-back plug • Run the software that comes with the plug A+ Guide to Managing and Maintaining your PC, 6e

  7. Figure 3-3 Loop-back plugs used to test serial and parallel ports A+ Guide to Managing and Maintaining your PC, 6e

  8. Cleaning Pads and Solutions • Various types are designed for specific uses • Example: contact cleaner • Cleans contacts on expansion cards • Warning: solutions may be flammable and/or toxic • Sources of safety and emergency instructions: • Side of the can of solution • Material safety data sheet (MSDS) • Adhere to safety procedures of your employer • Example: fill out an accident report (if required) A+ Guide to Managing and Maintaining your PC, 6e

  9. How to Work Inside a Computer Case • Objective: dismantle a computer, put it back together • Some safety precautions to follow: • Make notes that will help you backtrack • Keep screws and spacers orderly • Do not stack boards on top of each other • Do not touch the chips on circuit boards • Do not use a graphite pencil to change DIP settings • Turn off the power, unplug and ground the computer • Do not remove covers of monitors or power supplies • Keep components away from hair and clothing A+ Guide to Managing and Maintaining your PC, 6e

  10. Steps to Take Apart a Computer • Essential tools: • Ground bracelet • Phillips-head screwdriver • Flat-head screwdriver, paper, and pen • Follow safety precautions at all times • Summary of Steps 1 - 4 • 1. Enter CMOS and write down customized settings • 2. Power down the system, unplug all components • 3. Put the computer on a good-sized table • 4. Remove the cover of the PC A+ Guide to Managing and Maintaining your PC, 6e

  11. Figure 3-19 Removing the cover A+ Guide to Managing and Maintaining your PC, 6e

  12. Steps to Take Apart a Computer (continued) • Summary of steps 5 - 11 • 5. Diagram cable connections and switch settings • 6. Identify cables connecting drives to motherboard • 7. Remove the cables to all drives • 8. Remove the expansion cards • 9. Remove the motherboard (or drives) • 10. Remove the power supply from the case • 11. Remove each drive (if not already removed) A+ Guide to Managing and Maintaining your PC, 6e

  13. Figure 3-33 Remove the motherboard from the case A+ Guide to Managing and Maintaining your PC, 6e

  14. Steps to Put a Computer Back Together • 1. Install power supply, drives, motherboard, cards • 2. Connect all data and power cables • 3. Plug in the keyboard, monitor, and mouse • 4. Ask instructor to check work (if in a classroom) • 5. Turn on the power and check PC functions A+ Guide to Managing and Maintaining your PC, 6e

  15. Understanding the Boot Process • Key learning objectives • Know how to boot a PC • Understand what happens first when a PC is turned on • Understand how an operating system is loaded A+ Guide to Managing and Maintaining your PC, 6e

  16. Booting a Computer • Process that drives a computer to a working state • Hard (cold) boot: turn the power switch on • Soft (warm) boot: allow the OS to reboot • How to soft boot Windows XP • Click Start • Click Turn Off Computer • Click Restart A+ Guide to Managing and Maintaining your PC, 6e

  17. Choosing Between a Hard Boot and a Soft Boot • Hard boots are more stressful on machines • Power surges through system when PC is turned on • Reasons to choose a soft boot over hard boot • Less stressful on the machine • Faster due to skipping initial steps • Some computers have a soft and hard power switch • Soft power switch shuts down and restarts Windows • Hard power switch cuts power and restarts machine A+ Guide to Managing and Maintaining your PC, 6e

  18. The Startup BIOS Controls the Beginning of the Boot • The startup BIOS gets a system up and running • Four phases of the boot process: • BIOS runs the POST and assigns system resources • POST: power-on self test • BIOS searches for and loads an OS • OS configures system and completes its own loading • Application software is loaded and executed A+ Guide to Managing and Maintaining your PC, 6e

  19. Figure 3-40 Boot Step 1: The ROM BIOS startup program surveys hardware resources and needs and assigns system resources to satisfy those needs A+ Guide to Managing and Maintaining your PC, 6e

  20. Changing the Boot Sequence • BIOS looks to CMOS RAM to locate the OS • Boot sequence: order of drives checked for an OS • Change boot sequence using CMOS setup utilities • Access CMOS setup utilities when PC is turned on • Example: press F8 before Windows screen appears A+ Guide to Managing and Maintaining your PC, 6e

  21. Figure 3-42 Numbered steps show how BIOS searches for and begins to load an operating system (in this example, Windows NT/2000/XP is the OS) A+ Guide to Managing and Maintaining your PC, 6e

  22. My Computer Won’t Boot • First step: maintain your calm • Second step: develop a game plan • Figure 3-45 provides a procedure • Plan is driven by a set of yes-no questions • Example: Does the PC boot properly? • If no, troubleshooter is directed to another question • If yes, troubleshooter is directed to stop (for now) A+ Guide to Managing and Maintaining your PC, 6e

  23. Figure 3-45 Use this flowchart when first facing a computer problem A+ Guide to Managing and Maintaining your PC, 6e

  24. Troubleshooting Major Subsystems Used For Booting • Categories of troubleshooting steps in Figure 3-45 • The electrical subsystem • Essential hardware devices • The motherboard, memory, and the CPU • Video • Reading from the hard drive • Key aides: tables identifying error codes A+ Guide to Managing and Maintaining your PC, 6e

  25. Table 3-4 Beep codes and their meanings A+ Guide to Managing and Maintaining your PC, 6e

More Related