My fan was making more of a grinding/buzzing noise. As if the bearing had gone bad. Spinning it with a finger, it would not operate as smoothly as the CPU fan did. I was able to get it running after blasting it with compressed air, but the bearing problem remained--hence why i sent it in for service. Again, if I could have replaced the fan assembly myself--I would have attempted it...or at least had a local repair shop attempt it. Gigabyte didn't even give me this option.