Chapter Overview Computer Disassembly and Reassembly

Slides:



Advertisements
Similar presentations
MUHAMMAD AHMED HUSSAIN
Advertisements

A+ Certification Guide
IT Essentials: PC Hardware and Software 1 Chapter 3 Assembling a Computer.
Chapter 22 All About SCSI.
Chapter 3 Computer Assembly. 3. Introduction Assembling computers is a large part of a technician's job. This Chapter will teach you how to work in a.
Assembling a Computer Safety Precautions CPU Installation
LOGO. Types of System Boards  Nonintegrated System Board  Nonintegrated system boards can be easily identified because each expansion slot is usually.
Chapter 7Assembling Your Own Computer System  7.1Assembling the Hardware 7.1Assembling the Hardware 7.1Assembling the Hardware  7.2Installing the Operating.
1 Exercise 1 Computer Hardware. 2 Objectives for Exercise 1 When you complete this exercise, you will be able to:
Troubleshooting Hardware Issues Lesson 5. Objectives 2.
A+ Guide to Managing and Maintaining Your PC Fifth Edition Chapter 5 The Motherboard.
Components of a PC. Motherboard. Computer Mother Board Computer Mother board and its constituent components A typical PC mother board with important.
I T Essentials I Chapter 3 JEOPARDY.
XP Practical PC, 3e Chapter 17 1 Upgrading and Expanding your PC.
Computer Maintenance PC Disassembly and Reassembly 1 Copyright © Texas Education Agency, All rights reserved.
IT Essentials: PC Hardware and Software v4.0. Chapter 3 Objectives 3.1 Open the case 3.2 Install the power supply 3.3 Attach the components to the motherboard.
Submitted by Ravi Prakash PGT(Computer Sc.) KV39 GTC Varanasi
How Hardware and Software Work Together
A+ Guide to Managing and Maintaining Your PC Fifth Edition Chapter 22 All About SCSI.
1 Chapter Overview Computer Cases Motherboards ROM BIOS.
1 Chapter Overview Understanding Expansion Buses Configuring Expansion Cards Cables and Connectors.
Computer Maintenance Unit Subtitle: Basic Input/Output System (BIOS) Excerpted from 1 Copyright © Texas Education Agency, All.
Computer Maintenance PC Disassembly and Reassembly UNT in partnership with TEA, Copyright ©. All rights reserved1.
Copyright © 2007 Heathkit Company, Inc. All Rights Reserved PC Fundamentals Presentation 43 – The Network Interface Card (NIC)
Day 4 Understanding Hardware Partitions Linux Boot Sequence.
The Basic Input/Output System Unit objectives: Access the BIOS setup utility, change hardware configuration values, and research BIOS updates Explain the.
© Cisco Systems, Inc. All rights reserved. Cisco Public ITE PC v4.1 Chapter 3 1 Chapter 3: Computer Assembly – Step by Step IT Essentials: PC.
A+ Guide to Managing and Maintaining Your PC Fifth Edition Chapter 1 Introducing Hardware.
Exercise 2 The Motherboard
Presentation on Assembling a Computer Presenting By: Neeraj Dhiman.
A+ Guide to Software Managing, Maintaining and Troubleshooting THIRD EDITION Chapter 2 How an OS Works with Hardware and Other Software.
Version 3 Troubleshooting PC Hardware Module 13. Version 3 2 Troubleshooting Basics Effective troubleshooting uses techniques to diagnose and fix computer.
Assembling and Disassembling a PC
Chapter Seven Updating and Upgrading Hardware. © Wiley, Inc. All Rights Reserved. Strata Objectives Covered 1.6 (1.2 FC0-U11 U.K.) Identify.
UPGRADING MEMORY BY : tuan mohd fariz.  Choosing and Installing Memory.
Computer Hardware Maintenance & Repairs Computer Hardware Maintenance & Repairs Suleiman Mohammed (mncs,mcpn) Instructor Institute of Computing & ICT,
A+ Guide to Managing and Maintaining Your PC Fifth Edition Chapter 23 Purchasing a PC or Building Your Own.
CompTIA A+ Guide to Managing & Maintaining Your PC By: JEAN ANDREW Computer Maintenance Chapter 1: Computer Basics Knowledge.
Computer Maintenance I
Lesson 2 Component Overview Core Hardware Fundamentals.
CN1260 Client Operating System Kemtis Kunanuraksapong MSIS with Distinction MCT, MCITP, MCTS, MCDST, MCP, A+
CompTIA Server+ Certification (Exam SK0-004)
Chapter 1: Introduction to the Personal Computer
Computer Literacy BASICS
Chapter Objectives In this chapter, you will learn:
A+ Guide to Managing and Maintaining Your PC, 7e
Purchasing a PC or Building Your Own
Chapter Objectives In this chapter, you will learn:
Chapter Objectives In this chapter, you will learn:
Chapter 3: Computer Assembly
Computer and Information Technology for HKCEE
Computer Maintenance Unit Subtitle: Basic Input/Output System (BIOS)
Components of Computer
Introduction To Computing
Instructor Materials Chapter 1: Introduction to the Personal Computer
Introduction to Computers
Module 2 How Computers Work.
Personal Computers and Applications
What’s in the Box?.
Chapter Overview Understanding Expansion Buses
Chapter Overview CD-ROM and DVD Drives Advanced Hard Disk Drives
Device management How does the operating system manage the hardware and peripheral devices? Device Driver: Each device is attached to your computer with.
Overview 1. Inside a PC 2. The Motherboard 3. RAM the 'brains' 4. ROM
Computer Startup.
Computer Literacy BASICS
The bios.
Memory Addresses.
Introduction Some topics covered:
Presentation transcript:

Chapter Overview Computer Disassembly and Reassembly Upgrading a Computer

Preparing to Work on a Computer Documentation is key to preparation. Collect the following before starting a job: Computer configuration sheet Computer and motherboard documentation List of all installed expansion cards Operating system (OS) documentation A plan of action that includes a checklist of tasks, tools, and parts

Questions to Ask Before Starting a Job Is this the right computer? Why am I taking it apart? Do I have everything necessary to do the job? Do I need more information before starting the job? Are there any proprietary hardware components in this machine? Do any of these tasks require the assistance of a third-party technician?

Tools and Components Assemble a toolkit that contains standard tools and a DOS boot floppy disk. During planning, ensure that you have all items required. Have on hand: The original OS disks A rescue disk for the version of Microsoft Windows you are working with The correct utilities for the OS version Virus-checking utilities, with up-to-date signature files

Disassembling a Computer Removing the computer case gives you access to memory, expansion slots and cards, and the CPU. Each computer brand has some custom components or layout. Use the manual and other documentation that came with the computer. The extent to which you have to disassemble a computer depends on the specific problem or repair.

Procedure for Disassembling a Computer Make a complete backup of necessary OS and working files. Document the system (hardware and software). Create a clean work area with plenty of room and light. Gather all the necessary tools for the job. Implement all proper safety procedures. Turn off the computer.

Procedure for Disassembling a Computer (Cont.) Disconnect the power cables. Wear an antistatic wrist-grounding strap. Locate the screws for the cover. Remove the screws. Remove the cover from the computer. Document the location of expansion cards and drives.

Procedure for Disassembling a Computer (Cont.) Remove all the cards and place them in antistatic bags. Document the location and connections for each drive. Remove the interface and power connection cables. Remove the drives from their bays. Remove the motherboard.

Reassembling a Computer Follow the disassembly procedure in reverse order. Do not force connectors into place. Do not force expansion cards into the slots. When removing cables, remember the pin 1 locations. Connect the cables to the drives before installing the drives in the bays. Test the system before replacing the cover.

Preparing to Upgrade: the Configuration Sheet

Memory As programs and hardware get faster, memory is more important. Memory upgrades are simple to perform. Purchasing the right type of memory is critical. Consider memory chip format, speed, extended data out random access memory (EDO RAM), parity, and cache memory. Check the motherboard documentation to determine the memory type, population scheme, and location of memory slots. Two basic formats for memory are single inline memory modules (SIMMs) and dual inline memory modules (DIMMs).

SIMM Formats Contains memory in 8-bit chunks 30-Pin SIMM Contains memory in 8-bit chunks A 32-bit processor requires four SIMMs 72-Pin SIMM Contains memory in 32-bit chunks A 32-bit processor requires one SIMM

DIMM Formats DIMMs are easier to install than SIMMs. A “key” or notch cut into one edge prevents incorrect installation. When you buy a DIMM, you must know the exact memory type. DIMMs are found in larger memory sizes than SIMMs.

Memory Considerations Memory speed is measured in nanoseconds (one-billionth of a second). The lower the number, the faster the chip speed. All chips in the same computer should run at the same speed. Typical speeds are 50, 60, 70, and 80 nanoseconds. The motherboard documentation should list the appropriate speed.

EDO RAM EDO RAM can improve read times and overall performance by up to 30 percent. The chip outputs data from one address while setting up a new address.

Parity Parity is used to check the reliability of data. Parity requires an additional bit. Memory can be purchased with or without parity; the cost is higher with parity. System specifications indicate if parity is required. Parity and nonparity chips cannot be mixed. Some systems allow parity to be turned on or off in the basic input/output system (BIOS).

Cache Memory L1 cache is built into the processor and cannot be changed. L2 cache can be built into the processor or on the motherboard. Check the motherboard documentation to determine if you can upgrade the L2 cache.

Installing a SIMM

CPU Upgrades CPU upgrades are becoming less common. The first task is to determine if the CPU can be upgraded and which CPU upgrade will work. The motherboard documentation specifies compatible CPUs. Check on required BIOS upgrades or jumper settings. A new motherboard is required for upgrading a 386 to a Pentium or a Pentium to a Pentium III, or for CPUs from different manufacturers.

General Procedure for Installing a CPU Turn off the computer and unplug the power cord. Disconnect external devices (AC power and monitor power). Follow the appropriate electrostatic discharge (ESD) safety precautions. Remove the cover of the computer. Locate the socket for the CPU on the motherboard. Remove the old processor.

General Procedure for Installing a CPU (Cont.) Install the new processor by aligning the chip properly. Set any jumpers or switches on the motherboard. Reconnect any peripherals (keyboard, mouse, monitor). Replace the cover and power up the computer. Make changes to the BIOS, if required, using the complementary metal-oxide semiconductor (CMOS) setup program.

Additional Considerations for Installing a New CPU Some CPU upgrades require installing a new voltage regulator and cooling fan. In motherboards that support more than one CPU, all CPUs must be of the same type and from the same manufacturer. Some Pentium II and later motherboards have a special card that is inserted in any empty CPU slot.

Expansion Cards Install an expansion card to add faster video, add more ports, or improve sound quality. Ensure that the expansion card will work in the system to be upgraded. Ensure that the appropriate drivers are available for the OS.

Considerations for Installing an Expansion Card Ensure that adding a new card is the most cost-effective way to upgrade. If no expansion slots are available, free up space by Replacing single-port cards with one multifunction card Using a Small Computer System Interface (SCSI) card and a chain of SCSI devices Using a universal serial bus (USB) if available

Considerations for Installing an Expansion Card (Cont.) Ensure that the card fits in the slot and matches the bus type of the motherboard. Document available I/O ports and interrupt requests (IRQs) on the system. Ensure that enough RAM is available to support the device and driver. Ensure that a direct memory access (DMA) channel is available if required. Identify potential conflicts with other cards and devices. Obtain the appropriate driver for the OS.

Installing a Non–Plug and Play Expansion Card Read the expansion card documentation and note special requirements. Check the computer configuration to determine available I/O addresses and IRQs. Configure jumpers or switches on the card if required. Turn off the computer and unplug the power cord.

Installing a Non–Plug and Play Expansion Card (Cont.) Follow the appropriate ESD safety precautions. Remove the cover from the computer. Install the card in a free slot and power up the computer. Replace the cover. Power up the computer. Install any software drivers or applications.

Installing a Plug and Play Expansion Card Plug and Play allows for changes to computer configuration with minimal intervention. Plug and Play devices allow the system to configure the card. To allow Plug and Play devices to work immediately, the computer hardware, OS, and card must all be Plug and Play compliant. Some systems require enabling Plug and Play in the system BIOS.

Considerations for Installing Hard Disk Drives Ensure that the drive fits. If not, use a SCSI, USB, or parallel port interface drive. Ensure that the system BIOS supports the size of the new drive. Ensure that the drive controller supports the new drive. Ensure that you have enough cables to install the drive.

Preparing to Install an Integrated Device Electronics (IDE) Drive Hardware preparation consists of ensuring that You have the correct drive The drive fits into the computer You have the proper cables to connect the drive Software preparation consists of having a floppy boot disk with the format and fdisk utilities.

Installing an IDE Drive Collect all necessary documentation for the drive and computer. Back up any data you want to keep. Turn off the computer and unplug the power cord. Follow the appropriate ESD precautions. Open the computer case.

Installing an IDE Drive (Cont.) Check the documentation and set the jumpers for the drive, if required. Connect the cable to the drives.

Installing an IDE Drive (Cont.) Connect the power connection cable. Install the drive in its bay. Reconnect the computer power and boot up the system. Run the CMOS setup program if necessary.

Additional IDE Drive Installation Considerations Set up and test a drive before final installation in the bay. Avoid ESD and protect the drive from overheating. Use disk management software in older systems that require it.

Additional Steps After the Physical Installation Boot the computer from the bootable floppy disk, and run fdisk to create and set the partitions. Format the drive. If it is the only drive, format it with system files. Replace the cover on the computer.

Operating System Driver Installation Device driver setup is no longer a complex task. Microsoft Windows 98, Microsoft Windows Me, and Microsoft Windows 2000 have reduced the need for manual intervention. Windows recognizes and configures Plug and Play devices automatically. A wizard installs the appropriate drivers and resolves any device issues.

Using the Add/Remove Hardware Wizard

Motherboard Installation Considerations Replacing the motherboard may be the most inexpensive way to completely overhaul a computer. Some motherboards are proprietary and can be replaced only with one made by the same manufacturer. The motherboard must fit into the existing case. The motherboard must have the same built-in COM and LPT ports as the old one. You should determine if the new motherboard has a built-in video card.

Motherboard Installation Considerations (Cont.) The new motherboard must accommodate the existing expansion cards. The power supply connector should be as close to the power supply as possible. The existing drives must work with controllers on the new motherboard. The memory on the old motherboard must work with the new one. The upgrade should meet your current and future requirements.

Replacing a Motherboard Replacing a motherboard is similar to building a computer. The procedure is as follows: Complete an installation checklist. Follow the steps for disassembling a computer. Check the settings on the new motherboard.

Replacing a Motherboard (Cont.) Install the new motherboard. Reconnect the case switches. Follow the steps for computer reassembly (outlined in Slide 9). Test the computer to ensure that it boots. Complete the final testing and close the case.

Chapter Summary Preparation is key to a successful upgrade or repair. Document everything. Have a complete toolkit and take safety and ESD precautions. Memory is probably the simplest upgrade performed by a technician. Installing a new CPU and installing an expansion card are common ways to upgrade older computers. Installing a new drive is not difficult when you follow the procedure carefully. Installing a new motherboard completely overhauls the computer.