There's a loud static noise coming from my soundcard whenever I play 3d games or use the mouse. I noticed the graphics card has coil whining, but this didn't use to affect the sound before the last month. It only happens with the soundcard sound, the onboard sound is fine.
Could it be the PSU? Because I think it may be malfunctioning.
I changed the PSU and the wiring to no avail. I also tried plugging the sound card on all posible PCIe slots and reinstalling the drivers. It could be related to the drivers since the issue started around the time I updated them to the last version, but I can't roll back to prevoius versions. No changes on the noise so far.