I removed AMD stock cooler to install antec c400 and it is my first time to install a cooler I didn't find the brackets on the motherboard I am not sure if I installed the backplate properly I just put it on the back of the MB after that I installed the brackets from the other side I had to hold the backplate to stop it from falling until I install the screws of the mountings bracket is that the proper way to install it or I missed something I feel like that cooler is gonna fall on the graphics card