iMac 27 HD Noise

[Lumca]

Hello,
I bought the iMac 27 "4 months ago and was completely silent. But he started making some noise when I click on something or just open my app. I have a 1TB HD, and it was 60% full, so I deleted about 30% and now is not that frequent noise. Is there some fix?
BTW: That noise is not loud but the iMac was really silent and now he starts do that.

 

[ArchiMark]

Are you sure that it is HD noise not fan noise?

If HD noise, that's usually not a good sign....I'd make sure that you have up to date backups of your data....just in case....

If noise gets worse or louder, than I'd have iMac checked out....

FWIW, I've had two drives crash on me in the past....not fun, nor cheap to get your data back if you don't have current backups....