My power supply responds to the on/off switch and receives power, my PC power switch will turn on/off and when i turn it on the fans and lights go on as well, but nothing connected to my PC responds (mouse keyboard monitor headset and WiFi adapter).. thinking it could be the motherboard but not sure any ideas? Happened about a month ago but magically fixed itself and now it happened again. Did notice when I press my PCs power button I don’t hear the volt type sound that I normally hear but idk what hardware that issue would correspond to