Windows Vista Basic logo attached on the body of the VAIO notebook indicates that the product works well with Windows. The basic logo requirements ensure reliability, stability, security, and proper installation, as well as implements functionality that take advantage of some of the latest Windows innovations.
For the Windows Vista Client Operating System, a product (system or device) can obtain one of two levels of compliance, as described below. The following table provides guidelines on how the compliance levels map to Windows Vista client SKUs.
Please refer to the following link for more details.
Logo Program Compliance Levels - http://www.microsoft.com/whdc/winlogo/hwrequirements.mspx
How to verify currently running Operating System on your VAIO Notebook?
Please follow the guidelines below
1. Click Start button and then Right-click My Computer.
2. You can find Operating System information, after clicking Properties.