My dvd player attached to my television went out so I wanted to watch regular dvd's on my computer. The computer is Dell pentium 4 3.0 with 2 gig ram. I have recently installed a new LG brand drive which is a combo cd/dvd/rw. I installed all the software that came with the drive and it came with "power dvd" which I let it use as default but when I played the dvd I get picture only no sound. I put in a Sheryl Crow music cd and it played it fine. Can someone please tell me what I need to do. I have a couple of older audio cards that will fit an empty slot in the computer but I would rather fix it otherwise. Everything else is working, I hope this is something simple. All my movies downloaded on the hard drive play fine. Can someone please help me fix this.