Today I had the problem of Fallout 4 Not launching Due to "No Sound Device Detected, Fallout 4 Cannot Run" here is how I fixed it


1) Check your sound and graphics drivers
Go to your graphics card developer website (Either Nvidia or AMD) and install their driver downloader. update your drivers and reset your pc. that is what fixed it for me.

2) Launch the game and sigh that relief that is hopefully worked. if not welp....not my problem lol