lost sound, need help :(

So, I was playing today, after 1hour or sth I decided to test other cfg. ET didn't work when it was autoexec (crashed already in et console, tried it a few times with several changes but it didn't help), but it was possible 2 play when I execed it in game. Then I wanted the settings, so I changed a few things (like overbrightbits etc nothing with sound) and now my sound is gone, only in et ofc. Tried pc reboot and other cfgs but it didn't help. Any1 any ideas? :<