remove it, clean off thermal paste from both heatsink and cpu, reapply a small amount of thermal paste (bout the size of a grain of rice), spread it around until the cpu is covered (do not be tempted to add more), reset the pushpins (make sure to pull them all the way up before you start, makes em easier to insert), push them into the mobo in a diagonal pattern
1 3
4 2
1 3
4 2