- Mar 29, 2005
My tower has started to emit a very low-noise hum when in standby. Could it be the power supply starting to go? I've got an ASUS M4A79 Deluxe board and a 600 watt PC Power And Cooling power supply. The hum may have been there all along since I built it last year but I've just now noticed it. I don't think it's one of those bad-sounding hums, but I just want to make sure.