Things you need before you start:
1. A Screw Driver
2. A Flat Working Bench
3. Computer Components consisting of:
a. Computer Case (Compatible with your Mother Board & Power Supply already installed)
b. Mother Board (CPU and RAM installed)
c. HDD with IDE Cable
d. CD-ROM (Optional) with IDE Cable
e. Floppy Drive (Optional, but Recommended) with IDE Cable
To start building your computer, follow these steps:
a) Unscrew your case lid or side as the case may be. There should be a screws right at the back to allow you to do this. (Also if your case may get opened often in the future, invest in some thumb screws)
c) First is how to put your mother board into your case. This is done in two parts.
First you have to screw special holders that do 2 things, Hold the motherboard up off the case side, and have holes to allow for your motherboard screws to be placed in. This should be placed in places whereas the holes on your motherboard correspond to.
After this you can then also now place your mother board into your case on top of these special screws. Once your mother board is in the correct place and lines up at the back, you now screw down your motherboard with the screws provided. You can now start adding components.
d) Take your HDD, Floppy Drive, CD-Rom and place them into there respective place in the case and screw them in. You should ensure to use all four screws for each component, as any movement whilst in the case when being used could cause damage.
e) Take your three (some cases only two) IDE cables and connect them to your mother board in there correct places. Ensure not to bend pins, and that you insert them the correct way around, usually there is a slit on one side.
f) Now connect the main power cable to the power board, most cases this is a large plug consisting of 2 rows of bout 6 holes.
g) Now you connect the three power plugs up to the HDD, Floppy Drive, CD-Rom and the other ends of the IDE Cables.
h) Everything should now be connected in your case excluding the front connecters. These are the connecters that make the LEDs and Power switch on the front of your computer work.
To connect these connecters, you must use the instruction booklet that came with your motherboard, as they must be connected in the right places before they work.
i) Once everything is connected, you can now place the lid or side back on your computer and screw it all back up. Connect it up and turn it on and see if everything works.
This is a quick and simple, but no where near full guide to constructing your own computer from components. If there are any problems after BOOT UP then Google search the problem, or ask right here. I also stress that you read any instruction manuals you may have for each device.

