Full version of Microsoft Windows 8.1 Professional.

Included in price:

- Installation files (both 32bit and 64bit version)

- OEM product key that works with both 32bit and 64bit version

- Free tech support with installation process.

- Activation guaranteed or your money back.

Please remember to backup your files before starting setup.
Windows 8.1 doesn't support upgrade from Vista or Easy Transfer import of Vista files and settings.
When upgrading Vista you need to use matching edition of Windows 7.