8 months ago - AndrewT - Direct link
When in the game alt-tab out to Windows. Right click on the Speaker icon in the taskbar, Open Volume Mixer. Make sure the game is not muted or set to a really low volume in there.

If that doesn't help Please attach here the latest (ONLY!) game log file, from here:
C:\Users\{Username}\AppData\Roaming\Surviving Mars\logs\
To see the AppData folder you'll need to enable View Hidden Items in File Explorer.

Plus, DXDIAG is a program you run from the Windows search box on the task bar. After running it will open a window and start collecting info with a progress bar in the lower-left corner. When it completes click the 'save all information' button and save it to a file then attach that file here.