I have a Lite-On SOHW 1673S DVD/RW. At first it played the DVD with only video but no sound. Now there is no video and no sound. I've tried more than one DVD. The program "Power DVD" came with the drive. Both Windows Media Player 11 and Power DVD close after a few seconds after executing the "play in" command. However it recognizes data and musics CD's with sound. I do not have a secondary PC to test this optical drive on. Any suggestions besides buying a new optical drive? Thanks!