Hello. I have a problem related to cpu fan. So when i turn on pc the cpu fan does not spin for at least 5 mins and i get American megatrends message with cpu fan error. After a few minutes cpu fan starts to spin with intervals. It spins for line 0.5 sec and stops for 1 sec. after that it starts to speed up but when i go to boot menu to check fan speed it is slower then used to be. The maximum speed is 1200-1300 now and it used to be more. I have no idea what caused this problem. I do not even know if it is harware related or something is wrong with software. So if anyone had the same problem and fixed it or just knows how to deal with it please notify me.