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

Loading...

PPT – A Certification Guide Chapter 3 BIOS, CMOS, and Firmware PowerPoint presentation | free to view - id: 446cc1-MDAwN



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

A Certification Guide Chapter 3 BIOS, CMOS, and Firmware

Description:

BIOS Updates: Learn how to upgrade the BIOS through flashing. What Is BIOS? BIOS = Basic Input Output System BIOS is firmware that Identifies connected system devices. – PowerPoint PPT presentation

Number of Views:111
Avg rating:3.0/5.0
Slides: 24
Provided by: BrianD55
Category:

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: A Certification Guide Chapter 3 BIOS, CMOS, and Firmware


1
A Certification Guide Chapter 3BIOS, CMOS,
and Firmware
Bootup and Configuration Files
2
Chapter 4Objectives
  • Understand BIOS, CMOS, and Firmware
  • Explain the motherboards 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
    settingsfor 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.

3
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

4
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.

5
BIOS Locations (Look for Battery)
6
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.

7
BIOS Settings and Screens
  • Common methods to access the BIOS/CMOS editor
    during bootup
  • Esc
  • Del
  • F1
  • F2
  • F10
  • CtrlAlt?
  • Most system splash screens provide information on
    which key to press.
  • When in doubt, consult the motherboard manual.

8
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

9
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

10
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

11
Sample CMOS Editor
12
CMOS EditorSystem Information
13
Setting Boot Sequence
14
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

15
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.

16
Power Management
17
Enabling Virtualization
18
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)

19
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.

20
Having a Successful BIOS Upgrade
  • Do you need a BIOS upgrade?
  • Usually notIf it aint broke, dont 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

21
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.

22
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.

23
Chapter 3Summary
  • Understand BIOS, CMOS, and Firmware
  • Explain the motherboards 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
    settingsfor 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
About PowerShow.com