My speakers work fine when plugged into my gf computer, but when plugged into mine, I get nothing but buzzing. No music or anything else. I have not made any changes to my computer. I tried rebooting the computer didn't help. Not sure what to do.
Try other speakers or headphones. The audio jack might be broken.
That or your sound card may be broken aswell...
Let's hope that if it is broken and you have to replace it, you don't find out that it's integrated on the motherboard