MSI X399 GAMING PRO CARBON AC Manual page 28

3. Remove the protective pin cap, and then close and buckle the frame rail.
Protective pin cap
4. Close the load plate, and then turn the load plate screws clockwise a little with the
AMD Torx screwdriver in the sequence 1→2→3→1→2→3 until they are snug.
1
AMD Torx screwdriver
3 2
5. Tighten load plate screws until you hear a click from the AMD Torx screwdriver.
Important
If the load plate is not secured properly, the computer will not power on.
6. Apply thermal paste on the top of the CPU.
Thermal paste
28
Overview of Components