When I first booted up my comp, the sound was working fine with my on board motherboard sound (nForce780i). Then, for some reason, it stopped working. I unplugged the HD Audio plug from my mobo and plugged it back in, but in the process I bent two of the prongs back from the connection on the mobo, flattening them. I used tweezers to place them back upright, and plugged the HD audio back in. It worked fine for awhile, but eventually quit on me. I have unplugged and plugged back in the HD Audio plug several times, with no luck. Any help is greatly appreciated. Thanks.