system configuration & disassembly and power it190 foundations in information technology

System Configuration & Disassembly and Power

IT190 Foundations in Information Technology

Unit 3 Checklist Complete Assignment Complete Discussion Board

Remember to make your first post before Saturday

Post on three different daysCheck for spelling and grammarBe professional

Flexible Learning ActivitySeminar orQuiz


Unit 3 Objectives

Discuss the function of computer interrupts

Analyze power supply problems Explain how to configure and update

hardware Covert numbers between number

system


Agenda Interrupts BIOS Start-up/Boot Sequence Maintaining the BIOS Computer hardware Disassembly and reassembly The power supply Cables and connectors Computer disposal


Interrupts

What is an IRQ? What is an IRQ conflict?

How is it resolved?

What is a PCI interrupt? How is a PCI interrupt different than an

ISA IRQ? What is PnP?


Default ISA IRQ Assignments


IRQ 0 System Timer

IRQ 1 Keyboard

IRQ 2 Cascaded with IRQ 9

IRQ 3 Default COM2 and COM4

IRQ 4 Default COM1 and COM3

IRQ 5 LPT2

IRQ 6 Floppy Drive Controller

IRQ 7 LPT1

IRQ 8 Real Time Clock

IRQ 9 SEE 2

IRQ 10 Open

IRQ 11 Open

IRQ 12 PS/2 mouse or Open

IRQ 13 Math Coprocessor

IRQ 14 Primary Hard Drive controller

IRQ 15 Secondary Hard Drive controller

Resolving IRQ Conflicts


BIOS Boot Up Sequence What is the BIOS? Boot sequence

Find BIOS ROM chipPerform POSTLooks for video card and loads driversLooks for other expansion cardsGathered information compared with CMOS

setup programMaster Boot Record (MBR) loadedMBR locates and loads OS into RAM


Maintaining BIOS

Why would you change your BIOS settings?

How do you change BIOS settings? How are BIOS defaults reset? How do you Flash your BIOS?


Computer Hardware

PCI AGP PCI-E USB FireWire


Disassembly & Reassembly Safety first! Documentation ESD EMI/RFI Power Surges


The Power Supply

What does it do? Symptoms of power supply problems Troubleshooting power supply problems


Cables and Connectors SATA data cable 15 pin SATA power connector Molex connector CPU power connector 4 pin floppy power connector 6 pin PCIe power connector Fan speed motor connector Molex to berg converter Y Molex connector


Computer Disposal

Hazardous materialsLeadMercuryCadmiumHexavalent chromium

RCRA State Environmental Laws

Reuse, recycle, and trade-in


Computer Disposal Remove or reformat hard drive

Deleting filesFormatting hard drive

Wiping utilityCyberCideWipeDriveBoot And Nuke

Remove personal identification Get an agreement for proper disposal


Questions?


system configuration & disassembly and power it190 foundations in information technology

Documents