it makes me wonder again if the problem might not be the DVD player in my laptop. I am using a disk not a download.
Modern games install completely to the hard drive and the only reason to have the DVD in the drive is to pass the copy "protection" check. I doubt that's what's causing your sound problem. If the DVD player didn't read the game files correctly during the install, you'd be having sound problems now, just as you were when you first posted -- and quite possibly you'd have gotten a CRC error during the install.
It's more likely that the computer was running some maintenance programs in the background while you were trying to play the game, and it was eating up enough of your computer's resources to affect the game.