My computer is making a buzzing sound, please help.

I just noticed this today. When the computer is off, and I flip the switch on my power supply, it begins to buzz. Is it normal for a power supply to buzz? It's been exceptionally hot and humid for a couple of days now, could that have something to do with the buzzing?

You migh have a lot of dust in your computer or a cable is making contact with a fan resulting in a buzzing sound.

You migh have a lot of dust in your computer or a cable is making contact with a fan resulting in a buzzing sound.

Shade340

[QUOTE="Shade340"]

You migh have a lot of dust in your computer or a cable is making contact with a fan resulting in a buzzing sound.

citizen-zero

Definitely not normal. In fact, I just replaced an Antec supply on one of my systems for a similar issue (mine was more a high-pitched whine than a buzz). You might want to replace that ASAP.