So, I finished the campaign of Halo1, 2 nd 3, no problems so far, but, when I started playing Halo4mcc I could not hear any speech between Master chief nd Cortana and even some enemies, i mean,...WTF. the weirdest thing is that i can hear the sounds of the weapons shooting and something else... How can I fix this problem? I do not want to reinstall the full game again.