Problema con A720 touch screen actualizacion de w7 a w8

Hola buenas tardes 
Hace unos dias actualize mi pc a windows 8 y todo me hiba funcionando perfecto, sin embargo de la nada me dejo de funcionar el touch de la pantalla ya tengo los drivers actualizados ya descargue lenovo solution y no encuentro el problema,podrian darme una sugerencia o algo ya que este es el motivo por el cual migre a windows 8 por el touch de la pantalla.
En espera de su pronta respuesta, espero no tener que volver a esperar mas de 2 meses para tener alguna sugerencia..
Muchas Gracias.

El enlace indica que es el controlador correcto para tu modelo, pero igual el problema persiste.
No te podría asegurar que exista una solución a través de un controlador actualizado no veo otro en la web de soporte con una versión superior al mostrado en la web de soporte.
Desde que tienes Windows 8 el sistema te ha pedido que instales actualizaciones?
Otra cosa que podría ayudar es cuando estas en administrador de dispositivos en la parte del controlador gráfico, en el botón actualizar te da la opción que escojas desde tu equipo te arroja una lista con controladores? te serán de utilidad de ser el caso, puedes intentar esto también mediante el método que dejas en el enlace mas arriba.
Un saludo.
@Antony_Vamu
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