How to Disassemble and Assemble the System Unit

 DISASSEMBLE THE SYSTEM UNIT
1. Detach the Power Cable
2. Remove the Cover
3. Remove the Adapter Cards
4. Remove all the Drives
5. Remove the memory module
6. Remove the Power Supply
7. Remove the MotherBoard
8.  And so on. :)

ASSEMBLE THE SYSTEM UNIT

Step1

Computer Central Processing Unit or CPU
Assemble all the parts you need on a table.
Step 2
Computer Motherboard
Attach your Motherboard to the Chassis.

Step 3
Random Access Memory sticks or RAM
Install the Random Access Memory (RAM) sticks to the Motherboard.

Step 4
Install the Hard Drive. Your options are IDE (Integrated Drive Electronics) or SATA (Serial Advanced Technology Attachment) Hard Drives. Make sure your Motherboard and Power Supply support your Hard Drive.

Step 5
DVD-ROM drive
Connect the CD-ROM, DVD-ROM, CD-RW or DVD-RW to the Chassis being careful to align it with the front of the Chassis. Use the Screwdriver to tighten the screws firmly.

Step 6
Install your Video, Sound and Network Cards if they are not on-board the Motherboard.

Step 7
Close your Chassis. Turn on your computer after plugging it to a power source and attaching your mouse and keyboard. Open your CD-ROM drive, place your operating system in the Drive and close the Drive.Enjoy your new personal computer.

Thanks for Reading :D