Fan becoming very loud

[luxiox]

I've just built my gaming rig - i5 4690k 3.5ghz, gtx 970 SC, MSI Z97 Mobo, 16gb ram. The fans already make quite a lot of noise, but it's tolerable. However when loading up games one fan appears to become very load and annoying. For example loading up Sims 4 is fine, when actually playing it the sound suddenly starts and temporarily stops when clicking objects within the game. As far as I can tell it's not the CPU fan or the GPU as I've maxed them both temporarily and not achieved the same sound. Does anyone else have any suggestions?

 

[thejackal85]

Loud fans almost always mean one of two things: one of the blades are bent or the fan is going out/is defective. Check the blades in the fan to make sure they are not bent or anything like that and from there, try plugging the fan into a different port on the board; that might help, but don't hold your breath on it.

 

[lodders]

Run your PC on the desk with the side of the case taken off. When the noise starts, you should be able to work out where it is coming from.