if one does not have an SSD; the only moving parts in a PC is fan, HDD and optical drive, AFAIK. Not sure if there are any other pieces/parts that can create a "humming" noise/sound.?.?
Any way a sound byte can be uploaded and made access to?
I really do not see any point in flashing BIOS to remedy this.
Can the HDD be removed and the machine booted from CD/DVD, FDD or other bootable media to eliminate the possibilities of culprits?
Edit: This "humming" if caused by unbalance (from whatever source) would be a harmonic distortion thing.\: Mechanical... not related to file system or code.
I have had some on-board power regulators or resistors (whatever) make some noises in a few laptops that is akin to the sound of welding or egg frying frequency. These machines still run after years of normal to moderate-high use.
Edited by bludgard, 18 May 2016 - 10:27 PM.