A certification guide chapter 3 bios cmos and firmware
Download
1 / 23

A+ Certification Guide Chapter 3 BIOS, CMOS, and Firmware - PowerPoint PPT Presentation


  • 157 Views
  • Uploaded on
  • Presentation posted in: General

A+ Certification Guide Chapter 3 BIOS, CMOS, and Firmware. Bootup and Configuration Files. Chapter 4 Objectives. Understand BIOS, CMOS, and Firmware: Explain the motherboard’s firmware, known as the BIOS. Describe the relationship between the CMOS and the BIOS. Configure the System BIOS:

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha

Download Presentation

A+ Certification Guide Chapter 3 BIOS, CMOS, and Firmware

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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


A certification guide chapter 3 bios cmos and firmware
A+ Certification GuideChapter 3BIOS, CMOS, and Firmware

Bootup and Configuration Files


Chapter 4 objectives
Chapter 4Objectives

  • Understand BIOS, CMOS, and Firmware:

    • Explain the motherboard’s firmware, known as the BIOS.

    • Describe the relationship between the CMOS and the BIOS.

  • Configure the System BIOS:

    • Demonstrate how to access the BIOS and modify settings—for example, RAM, processor, and video settings.

  • Power-On Self-Test and Error Reporting:

    • Describe the POST and audible and visible errors that the POST reports.

  • BIOS Updates:

    • Learn how to upgrade the BIOS through flashing.


What is bios
What Is BIOS?

  • BIOS = Basic Input Output System

    • BIOS is firmware that

      • Identifies connected system devices.

        • CPU

        • RAM

        • Keyboard

        • Mouse

        • CD-ROM

        • Display

      • Tests system devices (Power-On Self-Test)

      • Initializes the system devices


Where is bios found
Where Is BIOS Found?

  • Firmware:

    • Software that comes embedded in its own memory chip.

  • Two types of memory used for BIOS firmware:

    • EEPROM

      • Electronically Erasable Programmable Read-Only Memory

    • EPROM

      • Erasable Programmable Read-Only Memory

      • Older PCs used EPROM

      • Could be erased by exposure to ultraviolet light:

        • Also known as “Flashing the BIOS.”

  • Motherboard is set up to initialize its operations using BIOS.



What is cmos
What Is CMOS?

  • CMOS = Complementary Metal Oxide Semiconductor:

    • A type of random access memory (RAM).

    • Memory can be lost without a power source.

    • On-board battery keeps this functional.

  • CMOS stores settings used by BIOS:

    • Boot sequence; hard drive parameters.

    • BIOS/CMOS access password.

    • These options are passed to the BIOS soon after the power is turned on.

    • Settings can be changed by using the CMOS editor.


Bios settings and screens
BIOS Settings and Screens

  • Common methods to access the BIOS/CMOS editor during bootup:

    • Esc

    • Del

    • F1

    • F2

    • F10

    • Ctrl+Alt+?

    • Most system splash screens provide information on which key to press.

  • When in doubt, consult the motherboard manual.


Alterable bios settings
Alterable BIOS Settings

  • Sampling of more frequently used options:

    • Boot sequence: hard drive, CD-ROM, USB

    • Memory configuration

    • CPU clock and frequency (overclocking)

    • CPU memory cache

    • Hardware monitor (to get status of fans in case)

    • Onboard audio/modem/network

    • Integrated peripherals (disable/enable)

    • PS/2 mouse (disable if using USB mouse)

    • USB legacy for non-Windows USB keyboard

    • Serial and parallel ports


Alterable bios settings1
Alterable BIOS Settings

USB options for 2.0 and 3.0

Keyboard options

Plug-and-play OS

Primary VGA BIOS

AGP card speed

Serial and parallel ports

Shadowing (for video BIOS)

Boot Time Diagnostics

Power management

Virtualization

Setup/BIOS password

SATA/PATA drives


Bios auto configuration
BIOS Auto-Configuration

  • Most preferred choice versus manual setup

  • Three options:

    • BIOS defaults:

      • Original BIOS settings

    • Setup defaults:

      • Optimized settings

    • Turbo:

      • Engages overclocking when CPU is not under stress





Integrated peripherals
Integrated Peripherals

What are integrated peripherals?

Functions that used to be optional but are now considered mandatory:

  • Onboard video

  • Onboard audio

  • Onboard network card

  • HDMI port

  • USB ports

  • External SATA drive port


Power management
Power Management

  • Advanced Configuration Power Interface (ACPI):

    • Offers less power consumption when enabled.

    • Six standard setting options (S0-S5):

      • S0 means no power management is in effect.

        • Inputs, CPU, memory, and hard drive running.

      • S1/POS (power on standby)

        • CPU is off; memory is being refreshed.

        • PSU is on; hard drive is off.

      • S3/STR (suspend to RAM)

        • Microsoft calls this standby.

        • PSU is off; RAM is refreshed.

      • S0, S2, S4, and S5 are not commonly used.

        • Note: S4 is “hibernate;” RAM saved to disk.




Cpu system clock and overclocking considerations
CPU System Clock and Overclocking Considerations

  • CPU “speed” is set as a multiplier of the clock frequency.

  • No adjustments are needed unless overclocking is employed.

  • Should you overclock?

    • Better to set BIOS to “turbo” or “extreme.”

      • These allow temporary overclocking in unusual circumstances (gaming).

    • Prolonged overclocking means:

      • Need bigger fan/cooling apparatus

      • Better power supply (PSU)


Understanding bios error codes
Understanding BIOS Error Codes

  • Power-On Self-Test (POST):

    • Codes for RAM, hard drive, and CPU failure.

    • Memory, keyboard, and graphics cards are checked.

  • Problems can be indicated by:

    • Beep codes

    • On-screen error codes:

      • Text display

      • Hexadecimal codes

  • Be sure to review this section of the book before taking the A+ exam.


Having a successful bios upgrade
Having a Successful BIOS Upgrade

  • Do you need a BIOS upgrade?

    • Usually not…“If it ain’t broke, don’t fix it.”

    • Issues that sometimes require a BIOS upgrade for the system to work properly:

      • New hardware, such as large SATA and PATA/IDE hard drives, and different types of removable-storage drives

      • Faster CPUs

      • New operating systems and features

      • New BIOS options


Before doing a bios upgrade
Before Doing a BIOS Upgrade

  • Back up all important data.

  • Record BIOS settings or take a digital picture of them:

    • Identify the current version of the BIOS software.

    • Identify the exact make/model of your motherboard.

  • Download the BIOS update software:

    • Most vendors provide an .exe file that requires minimal effort.

  • Highly recommended that the PC is plugged into a UPS:

    • Power interruption during BIOS upgrade may make the entire motherboard unusable.


When things go wrong
When Things Go Wrong

  • Some newer motherboards have two BIOS chips:

    • Reboot using the alternative BIOS chip if the new BIOS upgrade fails.

  • Check for a flash “write protect” jumper.

  • Reset the flash recovery jumper:

    • Video may not work during this process.

      • Listen for beeps.

    • Reset jumper to normal.

  • Obtain a new flash chip from the motherboard manufacturer.


  • Chapter 3 summary
    Chapter 3Summary

    • Understand BIOS, CMOS, and Firmware:

      • Explain the motherboard’s firmware, known as the BIOS.

      • Describe the relationship between the CMOS and the BIOS.

    • Configure the System BIOS:

      • Demonstrate how to access the BIOS and modify settings—for example, RAM, processor, and video settings.

    • Power-On Self-Test and Error Reporting:

      • Describe the POST and audible and visible errors that the POST reports.

    • BIOS Updates:

      • Learn how to upgrade the BIOS through a process known as flashing.

        Next Lesson: Chapter 4


    ad
  • Login