A while ago, one of our Community Business CollegeQuickBooks students asked this question?
“Why is my computer humming?”
The ACTUAL reason?
In this case, the real reason the humming sound was coming from the computer was some a bundle of cables inside the main computer’s tower case had shifted and the internal cooling fan was brushing against it.
Laptops don’t have to worry about this kind of thing since they don’t have the cables that the desktop tower computer has.