Basically when I use headphones with my desktop, I get a steady crackling sound constantly. Sound is built into the motherboard which is a GIGABYTE GA-A75M-UD2H. Have tried various things on other forums with people who have the same problem, like uninstalling EasyTune6 (don't even know what it is). One interesting point is that I have noticed the crackling increases in frequency/pitch when the CPU is under load, when the HDD is running particularly quickly and when I do things like scroll up and down pages and resize windows, but I guess thats to do with the CPU load. Anybody else have this problem / know how to fix? It's really pretty annoying.. P.S. I don't get this using the speakers built into my monitor which is plugged into the socket at the BACK of the computer, headphones plugged into the FRONT.