Got my new PC yesterday (store put it together), and i have already played some games ( arma 3, CSGO) and i din't hear neither see the cpu cooler fan spin once!
So, i opened up the case, and it was correctly pluged, also, i spin the fan with my hand and suddenly it started to work but with some noise and VERY FUCKING FAST, now i restarted the PC and went to bios and put the CPU FAN SPEED TO NORMAL, and now doesn't spin again.