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 days Check for spelling and grammar Be professional  Flexible Learning Activity Seminar or Quiz IT190 Foundations in Information Technology

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 IT190 Foundations in Information Technology

Agenda  Interrupts  BIOS  Start-up/Boot Sequence  Maintaining the BIOS  Computer hardware  Disassembly and reassembly  The power supply  Cables and connectors  Computer disposal IT190 Foundations in Information Technology

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? IT190 Foundations in Information Technology

Default ISA IRQ Assignments IT190 Foundations in Information Technology IRQ 0System Timer IRQ 1Keyboard IRQ 2Cascaded with IRQ 9 IRQ 3Default COM2 and COM4 IRQ 4Default COM1 and COM3 IRQ 5LPT2 IRQ 6Floppy Drive Controller IRQ 7LPT1 IRQ 8Real Time Clock IRQ 9SEE 2 IRQ 10Open IRQ 11Open IRQ 12PS/2 mouse or Open IRQ 13Math Coprocessor IRQ 14Primary Hard Drive controller IRQ 15Secondary Hard Drive controller

Resolving IRQ Conflicts IT190 Foundations in Information Technology

BIOS Boot Up Sequence  What is the BIOS?  Boot sequence Find BIOS ROM chip Perform POST Looks for video card and loads drivers Looks for other expansion cards Gathered information compared with CMOS setup program Master Boot Record (MBR) loaded MBR locates and loads OS into RAM IT190 Foundations in Information Technology

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? IT190 Foundations in Information Technology

Computer Hardware  PCI  AGP  PCI-E  USB  FireWire IT190 Foundations in Information Technology

Disassembly & Reassembly  Safety first!  Documentation  ESD  EMI/RFI  Power Surges IT190 Foundations in Information Technology

The Power Supply  What does it do?  Symptoms of power supply problems  Troubleshooting power supply problems IT190 Foundations in Information Technology

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 IT190 Foundations in Information Technology

Computer Disposal  Hazardous materials Lead Mercury Cadmium Hexavalent chromium  RCRA  State Environmental Laws Reuse, recycle, and trade-in IT190 Foundations in Information Technology

Computer Disposal  Remove or reformat hard drive Deleting files Formatting hard drive  Wiping utility CyberCide WipeDrive Boot And Nuke  Remove personal identification  Get an agreement for proper disposal IT190 Foundations in Information Technology

Questions? IT190 Foundations in Information Technology