Everything was working fine about a month ago, then i put a DVD into the drive and the interactual player installation window popped up. By accident i clicked install and ended up cancelling the installation as soon as i could. Since then i have not been able to play and DVDs as the sound is constantly scratchy. The problem happens with all applications i try to run a DVD in (my default being WinDVD 5). All other music/audio related files run fine. Videos, audio files and anything else related runs smoothly, only DVDs have this god damn audio problem. I've had the same set up for about 6 months and haven't had a single problem. I would be grateful for any assistance.