Module 1-PCTech Review

7/27/2019 Module 1-PCTech Review

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IT Technicians Course


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Course Objectives

At the end of this seminar, theparticipant should be able to maintainand troubleshoot the PC Hardware and

Software troubles as well as Install,Configure and Troubleshoot Wired andWireless Local Area Network.


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Course Outline

Module 1:PC Technology Review

Module 2:OS Navigation and Configuration

Module 3:PC and Network Security Implementation

Module 4:Firewall and Proxy Server Module 5:Router and Router Management

Module 6:Wireless LAN

Module 7:Virtual Private Network


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Module 1 PC Technology

Review


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Objectives

At the end of the module, participantsshould be able to explain the basic PCtechnology concepts


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3 Basic Parts of theComputer System

Hardware

Software

Peopleware


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Hardware

Chassis

Monitor

Mouse

Keyboard Printer

CD/DVD Drive

Floppy Drive UPS/AVR

CPU

RAM

Hard Drive

Power Supply Motherboard

Modem/LAN Card

Video Card And the list goeson


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Ports Location


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Computer Cables


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The Universal Serial Bus (USB) Ports

Gives you a single, standardized, easy-to-use way to connect up to 127devices to a computer


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The Universal Serial Bus (USB) Ports

The computer acts as the host.can connect up to 127 devicescan run as long as 5 meters; with hubs, devices can beup to 30 metersWith USB 2.0, maximum data rate of 480 megabits per

second (40x faster than USB 1.1)A USB cable has two wires for power (+5 volts andground) and a twisted pair of wires to carry the data.On the power wires, the computer can supply up to 500milliamps of power at 5 volts.Low-power devices draw their power from the bus.

High-power devices have own power supplies , Hubscan have own power supplieshot-swappablecan be put to sleep by the host computer


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Whats Inside

System board Storage Devices

Floppy drive Hard drive CD / DVD ROM drive RAM

Power supply Circuit boards

CMOS (most CPUs) TTL

Peripheral / Power Cables


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System Board


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Expansion Slots


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Central Processing Unit

CPU

Socket


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Central Processing Unit


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SIMM / DIMM


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Cache Memory


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Permanent (Secondary) Storage Devices

Remote to the system

Permanently holds data

Common devices Hard disk

Floppy disk

Flash drive

CD / DVD ROM drive


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System Board Components Used in

Communicating Among Devices

Bus System clock Expansion slots

Industry Standard Architecture (ISA):Used by older and / or slower devices Peripheral Component Interconnect (PCI):

Used for high-speed input / output devices Accelerated Graphics Port (AGP): Used

exclusively for Graphics PCI Express (PCIe) Provides a higher

bandwidth for peripherals


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System Clock

P i h l


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Peripherals

Video Card


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Peripherals

Audio Card


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Peripherals

Internal Modem


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Power System

Power supply

Supplies power

to the system

board and otherinstalled devices

Provides 3.3, 5,

and 12 volts DC


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Electrical System

System board Power socket


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ROM BIOS


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CMOS Setup Chip


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Jumpers


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Software

BIOS/CMOS (Sometimes called Firmware)

Operating System DOS/Windows

Unix/Linux Mac OS

Applications MS Office (Word, Excel, Powerpoint, Outlook)

Browsers (Internet Explorer, Netscape, Firefox,Opera)

Utilities (Disk defragmenter, Scandisk, etc.)


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Peopleware

UsersBasic Users

Power Users

Programmers/Developers

AdministratorsPC Administrators

Server Administrators

Network Administrators

Database Administrators


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Common Errors with PC & Possible Solutions

MONITOR LED IS BLINKINGCheck connections, RAM, Display Card , CPU

THREE BEEPSProblem with RAM Module - reinsert / replace module

THREE BEEPS - 1 Long 2 ShortProblem with Display Card reinstall / replace hardware

THREE LONG BEEPS

Problem with RAM or BIOS (Basic Input Output System)

CONTINUOS BEEP

Problem with Keyboard
http://www.foolzparadize.org/technical-issues-vf18.html


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FDD LED IS LIT CONTINUOSLYInverted FDD cable connection

NO DISPLAY ON THE SCREEN AT ALLHard Disk Interface / Power connection

POWER LED IS OFFMain power / Mother board Connection

CMOS REVERTS TO FACTORY SETTINGReplace Mother Board battery / Reconfigure setup

FDD ERRORCheck Power / Interface cable connection, BIOS setting, Hardware


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HDD ERROR / HARD DISK FAILURECheck Power / IDE cable connection, Hard Disk parameters in BIOS,

Hardware

SYSTEM BOARD ERRORCheck for ambient Power supply, Physical connections, Overheating,RAM, BIOS, Hardware

SCREEN DISPLAYCheck Display frequency, Screen resolution, Video cable, Virusinfection, Hardware

ELECTRICAL SHOCKCheck Chassis grounding, Frayed wires


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NON-SYSTEM DISK ERRORCheck Floppy Disk boot system, BIOS setup, Hard disk setup

MISSING OPERATING SYSTEMCheck for missing file system

MISSING COMMAND INTERPRETOR

Check the file command.com if corrupted, erased or infected byvirus

I/O ERROR?a. The type of Hard Disk in CMOS may not be set properly.b. Operating system used for formatting is not valid

DIVIDE OVER- FLOWCheck for conflicting directories / files.


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NOISY HARD DISKCheck for damaged sector, Hardware

HARD DISK HANGS DURING ACCESSCheck for Power surge / spike, RAM, CPU usage, Virus infection,Hardware

HARD DISK NOT DETECTEDCheck Power / IDE Connection, BIOS setup

NO PARTITIONCheck Hard disk preparation

MMX/DLL FILE MISSINGCheck for damaged / corrupt operating system, Virus infection.


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WINDOWS REGISTRY ERROR

Occurs when PC is improperly turned off. Reinstall operating system

DISPLAY COLOURConfigure Display Properties

UNKNOWN DEVICE FOUNDThe driver utility is not provided with operating system. Insert DriverCD and install software for the above Device. (Every Devicerequires driver utility to set active


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Trends


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Trends

Smart Phones (Internet ready fones)

Flash-based Laptops (EeePC,WizBook, etc.)

Viruses will no longer be confined toWindows

Multiprocessor PCs (Core 2 Duo,Quad Core, etc.)

Network Games (DOTA, Cabal, etc.)


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Trends

LCD Monitors are in

Video Card: 128-bit; DirectX10

Connectors: Firewire (IEEE 1394) RAM:DDR2 PC2-6400 DIMMs

External Hard Drives goes beyond

GB

Documents

Module 1-PCTech Review