Light bubbling sounds from case

[chicago30]

This my sound weird but on several pc's I have had if I put my ear to the case I hear a VERY light popping or bubbling noise. I can even feel the case vibrate a bit when I hear the sound.

Is it the CPU getting hot?

Hard Drive?

I know its not a problem because I've heard it on 5 pcs.

Thanks

 

[Deleted member 217926]

This my sound weird but on several pc's I have had if I put my ear to the case I hear a VERY light popping or bubbling noise. I can even feel the case vibrate a bit when I hear the sound.

Is it the CPU getting hot?

Hard Drive?

I know its not a problem because I've heard it on 5 pcs.

Thanks

Hard drive?

 

[chicago30]

It must be. I cant think of anything else.