Bioshock and Windows 7
Just bought me BioShock from Steam, but running it on Windows 7 gave me some errors. I’ve searched around and the solution for me seemed to be almost too easy to be true, so I’ll share it with you all here.
First of all, BioShock wouldn’t start. The splash logo showed, followed by an error message claming “BioShock has stopped working“. This can easily be fixed by setting the compatibility mode for BioShock to Vista or Windows XP. To do this, locate Bioshock.exe (C:\Program Files\Steam\steamapps\common\bioshock\Builds\Release\Bioshock.exe for me), right-click, select Properties and set the Compatibility mode in the Compatibility tab to Windows Vista or Windows XP. Now the game launched.
Then a second problem showed: I didn’t have in-game sound, although the menu and the intro did. I’ve found a lot of possible solutions for this, ranging from using Windows 2000 compatibility mode (works for me, but the graphics degrade) to installing the latest sound drivers (didn’t work for me). But the most effective solution – strange as it may seem – appeared to be plugging in a device in the audio input of your computer, no kidding. You don’t even have to use the device, just plug it in. I think it can even by headphones…
So now everything works, and the game gives an astounishing first impression. Later more on that subject 
Hope this post saved you some trouble, and happy gaming!