3.The processor socket comes with a screw to secure the CPU. As showing in the picture bellow, loose the screw first before inserting the CPU.
4.Place the CPU into the socket by making sure the notch on the corner
of the CPU corresponding with the notch on the inside of the socket. Once the CPU has slid into the socket, lock the screw.
5.The contact area and gap between the processor and the heatsink require a thermal pad or thermal paste. Make sure that heatsink of the CPU top surface is in complete contact to avoid the CPU overheating problem. If not, it would cause your system or CPU to be hanged, unstable, or damaged.