1. Open up the case by undoing the screws and removing the side panels.
2. Insert the Power Supply Unit (PSU) taking care to line up cooling fan with case vent. Attach firmly with supplied screws and ensure the three-pin AC power cable is free and ready to be attached to the motherboard.
3. Carefully take out the motherboard from its antistatic bag and match up the holes in the board to the holes on the case. Then add the plastic stand-offs (supplied) to those holes. At this time, also make sure that the rear of the motherboard matches the bracket at rear of case. If not, remove case bracket and replace with compatible bracket which will have been supplied by motherboard manufacturer.
Before fixing the motherboard to the case, it is easier to attach the CPU and fan assembly to the motherboard first.
4. Installing the CPU and heatsink/fan:
a. On the motherboard, raise the CPU (processor) retaining latch.
b. Remove CPU from antistatic bag by its edges, place into processor socket and push retaining latch back into position.
c. Add some heatsink compound (don’t skimp on the quality of this seemingly unimportant item. Buy the best) to the heat spreader on top of the chip. Some instructions suggest ‘mounding’ compound in the centre of the heatsink. Follow whatever particular instructions come with your processor. The heatsink/fan assembly will sit on top of this.
d. Because we are adding a regular Intel heatsink/fan unit, we need to align four pegs on the corners of the heatsink/fan assembly with holes in the motherboard.