What does it fix?
Improve NVIDIA Guard Service Application.

How do I perform this update?
1. Exit all running programs.
2. Download this update and save it to your hard drive.
3. When the download is completed, locate the downloaded file in the location you specified.
4. Double-click EP0000290897.exe to run it.
5. Wait while the wizard updates your software.
6. When the installation is complete, restart the VAIO.