Just got a Sapphire HD 7770. Installed no problem, until I got on and noticed that no sound was coming from my speakers. I've set my speakers as my default audio device. I've also gone on to BIOs and enabled my onboard audio and its still not working. When playing things such as music, it says that something is playing, for instance the green thing is moving up and down to the sound, but nothing comes out of my speakers. My speakers are also not blown out, as i have hooked them up to my iPod and it works fine. Please help, thank you.