As of this morning something in my computer began to emit a buzzing sound. After a bit of troubleshooting I determined that the most likely cause the the GPU fan but I cannot figure out the cause of the issue. I built my computer only two years ago so I don't think gradual wear and tear could've led to this as well as I sprayed down my computer with compressed air to make sure the issue was not a dust blockage. I suspect it is an issue with the fan bearings but that assumption is based on nothing. Keep in mind this hasn't been a persistent problem as I have never had this issue before this morning. Moreover, I checked and my GPU temperature is sitting around 46C so I don't think it is an issue with overheating. My graphics card is a single fanned 6GB GTX 1060. Any thoughts on my current issue?