Toshiba Satellite C655D-S5080 Notebook PC?

Do I also assume Windows 7 Home Premium 64-bit, as the Operating System?

http://www.toshibadirect.com/td/b2c/retail-product.jsp?poid=488832


That's the O/S I'm going to use in this example;

Toshiba Support > Satellite C655D-S5080 Notebook PC > Main Support page,

http://www.csd.toshiba.com/cgi-bin/tais/support/jsp/modelContent.jsp?ct=SB&os=&category=&moid=2759781&rpn=PSC16U&modelFilter=C655D-S5080&selCategory=2756709&selFamily=1073768663

Click on the Downloads tab.
(Downloads / Support Bulletins / Detailed Specs / User Guide)

To the right of the bold subheading - Refine Search by:
,click on the blue Down Arrow to the right of the - All Operating Systems - box.

In the drop down list click on - Windows 7 (64-bit)

Now click on the blue Down Arrow to the right of the -
All Categories - box.
In the drop down list click on - Sound

Under the bold black subheading - Title - click on the blue -
Conexant Audio Driver (v8.54.44.52; 11-02-2012; 40.07M)

Click on the white - Download Now - in the red rectangle

A small window will come up. Click on - Save File
A small download window will come up.
Allow the file to fully download, then DOUBLE-click right on the file name.

At the bottom of the next 3 small windows, click on -
Next, Next, and Finish.

If you are not asked to restart your computer, do so.

[Click in the Windows logo button, then on the small Down Arrow. Click on Restart in the list ]

You may not have your Volume icon in the system tray anymore.
(System tray at bottom of Windows screen, and to the right)

Click on the Windows logo button. Click on Control Panel.
Click on Sounds, Speech, and Audio Devices.

Click on Sounds and Audio Devices
Under the - Device Volume - subheading, click on the small empty square box, to the left of - Place volume icon in the taskbar.
Now click on Apply to the bottom/right, and then on OK to the bottom left.

For additional questions please post in a Comment.
Regards,
joecoolvette