Removing hum in case without those sticky adhesive paddings

[veritas7]

Recently my Lian Li case has started to hum, and I found the part of the case that seems to be bringing this upon me it is the top (ceiling). The temporary solution I've done to muffle/remove the vibration/hum is by putting a 365 day calendar on top and that seems to do the trick.

What can I do to muffle/remove the hum but also not interfere with my temps or having to use one of those sticky adhesive pads that will ruin my Lian Li if I try to take it off in the future?

(Case is stock, no modifications have been done to the top so it's just a sheet of metal)

 

[Zero82z]

The only things you can do are weigh it down or attach something to it that will absorb the vibrations. Unfortunately, unless you don't mind keeping something heavy on top of the case, you will have to stick something onto it to stop the vibrations.