Sounds - Voices - Music » Music & sounds, but no voices

Hello,

I've tried to install SH3 on my laptop and it works fine except for the crew-voices. The game runs fine, there is the background music. I can here the engines and the sea, but not the crew voices. So, I have done a complete uninstall and re-install, but the same thing. It works fine on my other computer. Any ideas?

thanks

more details:

Startup Video