After you set the Jumpers, install the RAM, and the CPU you should mount the Motherboard to the wall of the case. You want it to be very secure so that it does not move at all.

The case that you buy will come with plastic spacers which are used to mount your motherboard to the wall of that case (not directly to the wall). *DO NOT allow the motherboard to make contact with any metal, this could cause the motherboard to misfunction.*

1. Step one is to match the spacers to the holes on the motherboard, this is where the motherboard will be supported.
   
   
2. Next match the spacers to the holes on the wall of the case, and screw them in.
   
   
3. Place the motherboard on top of the spacers and gently press it down until it clicks, which means that it is secure.
   

From my experiences, I have found that it is a lot easier if you mount your drives before you make your ribbion connections, so that you know exactly where to run them. It saves time to install expansion cards and mount drives before making connections. This will also allow you more room to work (its a lot easier with more room).

1. Select the spots on your where you would like to mount your CD-ROM, Floppy, and Hard Drive.
   
   
2. Secure the drives by using small screws (if you can, use four (4) screws per drive), this will keep all the drives from shifting back during use.
   

Now it is time to install all of the Expansion Cards that you have chosen. For installing expansion cards, you apply the same steps towards all of them, so apply the following for every the cards you want to install. Install all cards in the proper slot, such as PCI card go into a PCI slot and ISA Card goes into ISA Slot.

1. Read the documentation for your expansion card before you install it.
   
   
2. Remove the bracket on the slot you want to use. Keep the bracket incase you need it in the future.
   
   
3. Align the card's connectors and firmly press it into place (DO NOT FORCE THE CARD IN).
   
   
4. Secure the card with a screw.

When you computer is running, the BIOS will detect the new hardware, and the Operating System (if it's Plug and Play compatable) will allow you to install the proper drivers for that card. You can apply these steps to all the cards you want to install.

Take one last deep breath, we're going to make it through, this is the final step. We well be connecting the case wires, drive ribbons, and power supplies.

1. Mount the floppy and Keyboard connectors to the case, and then connect their wires to the proper location on the motherboard (if necessary; resort to motherboard manual for locations).
   
   
2. Using the drive ribbons (CD-ROM, Floppy, and Hard Drive), make the proper connections to the motherboard, and then to the device.
   
   
3. The Hard Drive connects to the Primary Connector, and the CD-ROM connects to the Secondary Connector. The Floppy Drive has its own connector that it connects to (If the floppy light continuously runs when you power the computer, just reverse the connection of the ribbon).
   
   
4. Now the wires for your case such as the Power LED, Hard Drive LED, Case Speaker, etc. need to be connected. Each wire, is usually labeled so you can figure where each one connects. Follow the motherboard manual for these connections.
   
   
5. Finally, you can connect the Case power supply to the motherboard. For AT Connections, you have to connect the two plugs with the black wires in the middle (this is the only way it can connect). If you have an ATX compatable motherboard and case, there is only one way that the power can be connected.
   
   

Now before you try starting up your new computer, go over all the steps again to check all Jumper Settings, Power Connections, if expansion cards are completly in their slots, Ribbons are fully connected, etc. Do a total check to make sure that you did everything the right way.