Acer aspire 6935g sound problem

[alfa123]

Hello,
my sound tuner on the right side doesn't react to my finger, and it is locked on silence.
please help?

 

[soundguruman]

go to the acer website and download the audio drivers for your model
turn the anti virus off, install the new drivers, turn the antivirus back on

 

[alfa123]

thanks

 

[alfa123]

I have done as you said, but how do i install the driver?