Sound problem with program 7.1

Buena mañana , instalar el programa 7.1 trabajo ayer que I actualización de las ventanas, ya que pueden no poner el 7.1 como predeterminado o perder todo el sonido de la PC,and even with the program on it does not let me select 7.1, in no way since it is on in theory it works, but it does not work,and now the sound of windows does not work, nor does the 7.1 work and try to contact the technical support and you do not have anyone who speaks Spanish,In addition, a machine speaks to me that does not understand my problem, and the truth is frustrating not to be able to solve something so basic with a company that does distributel,in spain, your website in English, support in English but you do not have anyone to solve problems in Spanish.