Applicable Models

This information is for the following models:
  • VGN-FZ28T
  • VGN-FZ25T
  • VGN-FZ28T
  • VGN-FZ25T

File Info

File Name

  • To install SigmaTel High Definition Audio CODEC

File Size

  • 5.65MB

Release Date

  • 2007-12-14

System Requirements

  • Windows XP


IMPORTANT: Before proceeding with the upgrade, disconnect all external hardware devices, including PC Cards etc.
Note: Before proceeding, ensure that the VAIO computer is operated using the supplied AC adapter.
Note: Save all data/files and close all running programs.

After you changed the OS from Windows Vista to Windows XP and install these drivers and applications you will face following problems:
1. AV Mode Button can not be used.
2. Instant On mode can not be used.
3. Fn+F5/Fn+F6 Function Key(Brightness Control) can not be used.
4. Fn+F10(Zoom in/out function) can not be used.
5. When connect with HDMI, the sound output does not work.



1. Execute Audio.exe file。
2. Follow the installation wizard that appears.
3. At the License Agreement dialog, read the agreement. Click I Agree to continue with the installation.
NOTE: Several setup boxes may briefly appear during the installation. Follow the installation wizard that appears.
4. When the installation finishes, please restart the computer if needed.