sound corrupt

ok guys basically i have crossfire but when i play it the sound doest work,the sound sounds laggy and corrupted.when i got to do vent during crossfire it sounds weird too but when cf is off it doesnt.i have renistalled numberous times.and the only programs i had running were
gamebooster and notron 360.i have had this problem for a motnh or too it is wrecking the game and i can not do scrims please help asap