Not sure what happened but I suspect AV but I have lost my engine sound. Any solutions short of a reinstall?Thanks,I can recover individual folders from a backup but not sure what folders?

Sorry guys, I found the problem. I installed a wireless headset. The sound control panel had the wireless headset active while I was using speakers. The reason I did not look for this earlier is that I was receiving some sounds. It appeared some sounds were going to the headset that I was not using while others to the speakers.Strange?