Loud buzzing noise

[Guest]

My computer started making this odd buzzing noise after I got back from a 2.5 week vacation. This didn’t happen before and I don’t know what is causing it. I have cleaned out all the dust filters as well.

 

[Metallus97]

sounds like either a fan scraping on something or a HDD having a hard time 

[TobiLu]

Never had this happen to me, but that sounds like my old PS2 CDs being messy.
Probably your Hard Drive or Fans.

[EsaT]

That's clear mechanical noise.

For a HDD to make that bad noise it wouldn't likely work.

More likely it's fan or then water cooler's pump.

Try stopping fans one at time.

[Guest]

Thanks anyone who said it was the hard drive. I took off the back panel on my case and was gently touching the hard drive bay and found out that it was my empty hard drive mount making the noise. I don't know why it didn't happen before my vacation though.