PC Maintenance: PC Maintenance: Preparing for A+ Preparing for A+

CertificationCertificationChapter 9: Working with the BIOS Chapter 9: Working with the BIOS

Setup ProgramSetup Program

Chapter 9 ObjectivesChapter 9 Objectives

Identify the purpose of the system BIOSIdentify the purpose of the system BIOS Access BIOS Setup utilitiesAccess BIOS Setup utilities Know what settings to change in BIOS Know what settings to change in BIOS

Setup for specific situationsSetup for specific situations Install a BIOS updateInstall a BIOS update Replace a BIOS chipReplace a BIOS chip

BIOSBIOS

Basic Input Output SystemBasic Input Output System Motherboard has a BIOSMotherboard has a BIOS Other devices may also have a BIOS (ex. Other devices may also have a BIOS (ex.

printer, network router, video card)printer, network router, video card) Typically stored on a ROM or Flash RAM Typically stored on a ROM or Flash RAM

chipchip

CMOSCMOS

Complementary Metal Oxide Complementary Metal Oxide SemiconductorSemiconductor

Type of RAM used for storing exceptions Type of RAM used for storing exceptions to BIOS settingsto BIOS settings

Powered by motherboard battery full-timePowered by motherboard battery full-time

Accessing BIOS SetupAccessing BIOS Setup

Watch for a Watch for a message at message at startup startup telling which telling which key to presskey to press

BIOS Setup UtilityBIOS Setup Utility

Exiting BIOS SetupExiting BIOS Setup

Refer to message onscreen for Refer to message onscreen for instructionsinstructions

F10 is typical for saving changesF10 is typical for saving changes Esc is typical for discarding changesEsc is typical for discarding changes

Floppy Drive ConfigurationFloppy Drive Configuration

BIOS does BIOS does not not typically typically detect detect floppy floppy drivesdrives

Hard Drive Configuration Hard Drive Configuration Usually Plug-and-Play, but manual setup Usually Plug-and-Play, but manual setup

is possible; refer to label on disk driveis possible; refer to label on disk drive

Boot ConfigurationBoot Configuration Set boot order (CD, Hard, Floppy, etc.)Set boot order (CD, Hard, Floppy, etc.)

Plug and PlayPlug and Play

When When Plug and Play OSPlug and Play OS is assumed, is assumed, BIOS relinquishes control of many BIOS relinquishes control of many hardware resourceshardware resources

Reset ConfigurationReset Configuration resets BIOS resets BIOS assignments of resources from its own assignments of resources from its own Plug and PlayPlug and Play

Assign IRQ for USBAssign IRQ for USB support enables support enables USB devices to work before OS loadsUSB devices to work before OS loads

Integrated PeripheralsIntegrated Peripherals

Legacy parallel and serial portsLegacy parallel and serial ports Set addresses or enable/disableSet addresses or enable/disable

Power ManagementPower Management

Can be configured in BIOS or in OSCan be configured in BIOS or in OS OS is preferable if possibleOS is preferable if possible Power management turned on in both Power management turned on in both

places can result in conflictsplaces can result in conflicts

Recover from Bad BIOS ChangesRecover from Bad BIOS Changes

1.1. Find reset jumper on motherboardFind reset jumper on motherboard

2.2. Change its positionChange its position

3.3. Power system on for 5 to 10 secondsPower system on for 5 to 10 seconds

4.4. Power system offPower system off

5.5. Reset jumperReset jumper

Install BIOS UpdatesInstall BIOS Updates

Download update from manufacturer’s Download update from manufacturer’s Web siteWeb site

Check instructions on Web siteCheck instructions on Web site Many types of updatersMany types of updaters

Command line utilitiesCommand line utilities Windows-based utilitiesWindows-based utilities Boot disksBoot disks

Replace BIOS ChipReplace BIOS Chip

Pull chip with chip puller toolPull chip with chip puller tool