Need Audio ON/OFF Toggle and Option to change Video Memory?

[iomangage]

Hi Team,
I have been using Acer 5920. (Not Acer 5920G).
This one is without the HDMI port and Addon Graphics Card.
A year back the right channel from the audio jack has been giving problems,
It sounds hissy at times or without any sound at times.
Had got it check with an acer technician who suggested MB replacement.(Lotsa Money).
One of my frnd had the same issue but got it resolve with a toggle in BIOS.
Audio ON/OFF.
Need the same option for my BIOS.
Here is the link:
http://www.4shared.com/zip/iTfCy2Kk/BIOS_3813.html

Acer Link for the same file:
http://global-download.acer.com/GDFiles/BIOS/BIOS/BIOS_3813.zip?acerid=633643226268343506&Step1=Notebook&Step2=Aspire&Step3=Aspire%205920&OS=702&LC=en&BC=Acer&SC=AAP_2

Please add the toggle option and also if you can add the option to increase Video Memory.


Thanks.
Abhijeet Desai