Didn't have that specific problem, but I did have the 5670 paired with an AMD 3 processor. For whatever reason, I had nothing but problems (both with audio and video) with that card. Scaling issues, audio popping, audio dropping, resolution not sticking, etc., etc. I tolerated the endless amounts of tweaking until Black Friday came around and decided to switch to an i3-3225 using the integrated GPU. Been a couple weeks and so far no issues. I know that's doesn't help, but wanted to share.