No, it is not possible to clean install Windows Operating System.
Sony provides functional support to Windows as an Operating System only when setup is performed through the supplied Recovery CD-ROM (in the state of initial shipment).
In addition, Microsoft does not provide support for Windows that is pre-installed in VAIO computers.
For more information, please refer to the Windows License Agreement, Software License Agreement and User Manual.
Depending on the product version, the Windows License Agreement can be located in either of the following:
- Accompanied Document
- Windows Guidebook
- License.txt file located in C:/Windows/Help(for Windows 95/98/Me)
- Eula.txt file located in C:/Winnt/System32(for Windows 2000)
User may also refer to the detailed list of Question & Answer on the End User License Agreement(EULA) in Windows Help of Windows 2000 and Windows Me.