My PC is making a low pitched buzzing noise. It sounds like the kind of noise an old light would make when you turn it on. The strange part is when I hold my hand against the PC and apply force (my pc is against a wall, so pushing it would make it hit the wall) the noise stops. This certainly can't be coil whine... Could my (bad) cable management be interfering with the HDD or PSU under the shroud, causing a noise? I can't seem to find any cases of this online!