Same issue here - normal windows install, no sound in main menu and black screen after game selection.
Tried different things mentioned in the FAQ section - e.g. installing the Codec Pack and testing several graphic/compatibility settings, but without success...
Is there any solution around the corner???
I was having the same issue about a month and a half ago, but I just redownloaded it and it seems to work now. Maybe they patched it recently? Either way, here's the answers from the GoG support ticket I opened back in April, maybe something here might help:
1) In case of GOG GALAXY 2.0 the repair button will be located next to the PLAY button (on the right) > Manage installation > Repair
2) Using an unusual DPI setting has been known to cause problems for some games. Please follow these steps to reset it to the default value and let me know if it helped:
I) Right-click an empty section of your desktop and go to "Screen Settings",
II) In "Screen Settings" window locate "Change size of text, applications and other elements" and move the slider to 100%. Press Apply to save settings.
III) In some cases custom DPI might be only visible in Custom Scaling settings. Please click on it and input 100 in the next window.
3) Your DxDiag report shows that you're using an integrated Intel video device. Please go to NVIDIA Control Panel and there to Manage 3D settings. You should be able to select the NVIDIA card as the preferred device. If this will not help to run the game, then please create a custom profile for the game to use GeForce as preferred device.
This video might be helpful: https://www.youtube.com/watch?v=mTbbG7QBDig
After that please update both your graphics devices drivers: http://www.nvidia.com/Download/index.aspx
4) Please download this archive: https://www.dropbox.com/s/armfv9zyoq5b64z/redist.zip?dl=0
once downloaded, please extract it, and install 2008, 2010, 2012, 2013, and 2015 redistributable packages (x86 and x64).
Number 4, what the hell. How did that work? I was having the exact same problem, and then I installed the 2013 redistributable, and the game loaded perfectly. Thanks a lot for this!