1. Computer Hardware Maintenance & Repairs Computer Hardware Maintenance & Repairs Suleiman Mohammed (mncs,mcpn) Instructor Institute of Computing & ICT, Ahmadu Bello University, Zaria.

2.  Assembling the Hardware Assembling the Hardware Assembling the Hardware  Installing the Operating System Installing the Operating System Installing the Operating System  Compatibility Issues in Hardware Compatibility Issues in Hardware Compatibility Issues in Hardware

3. * Precautions in computer assembling * Discharge oneself before handling hardware * Hold the main board and expansion cards by edges * Return the main board and peripherals to anti-static bags * Disconnect the power before working on the system * Choose the right combination of hardware * e.g. Home use and web surfing * LAN card or modem is needed * no need to install sophisticated hardware * Cost considerations * never go for CPU with the highest speed * choose a hard disk with appropriate capacity * consider reputation and warranty

4. * Procedure 1: Installing the Power Supply Open the computer case Fix the power supply Set the voltage supply at 200 - 230 V

5. * Procedure 2: Configuring the Main Board jumper * CPU System Bus Frequency * CPU Clock Ratio * CPU Core Voltage Setting up jumpers

6. * Procedure 3: Inserting CPU into the main board * The socket, heat sink and fan support base are mounted onto the main board * Heat sink and fan: prevent overheating

7. * Procedure 3: Inserting CPU into the main board

8. * Procedure 4: Inserting the RAM Check the position of RAM module Insert the module vertically into the DIMM slot and push it in

9. * Procedure 5: Mounting the main board into the computer case

10. * Procedure 6: Main board signal connections Connecting pins on the main board Case signal connectors Completed connectors

11. * Procedure 7: Connecting the Power Supply to the Main Board Power supply connectors

12. * Procedure 8: Installing the expansion cards * Install the video adapter first * AGP card goes into the AGP slot Position the expansion card horizontally over the slot Secure the card to the case with a screw Install other cards

13. * Procedure 8: Installing IDE devices * IDE drives: hard disk, CD-ROMs and DVD-ROMs * Set the jumpers on the drives before mounting * Two IDE channels on the main board * Each channel can attach to two devices Jumpers on IDE device

14. * Procedure 8: Installing IDE devices 1. Mounting the device into the device bay with screw 2. Align the red strip on the ribbon cable

15. * Procedure 8: Installing IDE devices 3. Insert the connector into the IDE port 4. Insert the power supply connector

16. * Procedure 8: Installing IDE devices * Master device: alone device on IDE cable * Slave device: second device on the same cable * Ultra ATA 66/100 IDE cable * black: for Master drive * grey: for Slave drive * blue: for connecting to IDE port onboard

17. * Procedure 8: Installing IDE devices * Installing CD-ROM drive * Install the drive into an available bay * Insert the power cord into the drive * Connect the drive to the main board via the ribbon wire * Connect the sound cable from the drive to the main board connector

18. * Procedure 8: Installing IDE devices * Installing CD-ROM drive Connect the sound cable to CD-ROM drive Connect the sound cable to main board

19. * Procedure 9: System check * Connect the power cable * Switch on the computer * Check the message on screen * Set up BIOS and install OS if the system works fine

20. * Fine tuning the computer installation * The drives are connected to the power supply properly. * A fan is attached to the CPU with the power plug connected to the main board. * Ribbon cables of floppy disk and IDE drives are attached correctly. * All connections are tight. * CPU core voltage is set correctly. * Cards are inserted fully in slots. * No wires protrude into any fans.

21. * Clean install * All the content of the hard drive are erased and everything is installed from scratch * Format the hard drive and install the OS * Back up the data before clean installing an existing PC * Upgrade * A new OS is installed directly over the previous version * Old files are left which affect the system

22. * Materials needed * Hardware documentation * Driver disks of hardware * User’s menu of new OS * Start-up procedures for installing an OS * Start from floppy disk * e.g. Windows 98 * Start from CD-ROM * e.g. Windows XP

23. * Start from floppy disk (Windows 98) * Prepare a boot disk * Check the boot-up sequence * Ensure the partition of the hard disk where OS is installed is active * Insert the boot disk into the floppy disk * Turn on the power supply * Insert the Windows 98 CD-ROM into the drive and type “D:\setup.exe” * Follow the on-screen prompts

24. * Start from CD-ROM (Windows XP) * Check the BIOS boot sequence * Insert Windows XP CD-ROM into the drive * Boot the system * Start installation process * Remove the Windows XP CD-ROM * Reboot the computer

25. Installing applications Start Have serial number? Have disk space? Register Now? Submit form Finish installation Restart needed? Run Enter Serial # Yes Find Serial # No Run install file Yes Free up space No Fill out form Yes No Restart Yes

26. * Compatibility problem among main board, video adapter and expansion cards * Solutions * Place each expansion card in different slots * Take turns at replacing every expansion card in a certain order * Use step-by-step approach to analyze the installation of device driver.

27. Thank You