Advertising is increasingly important for all businesses and Microsoft did not fail to do the upgrade to Windows 8.1, with emphasis on the Start button. Windows 8 represents a major change in Microsoft's operating system. The change is huge, but also critical, because of that Microsoft intends to bring this new update fixes. One of the main criticisms of Windows 8 was the Home button, it disappeared and was fundamental in previous versions of Windows, but that will be added in the new update. Upgrading Windows 8.1 hit the market on 18th of October, completely free. If you already have Windows 8, simply upgrading through the operating system itself. Days later, will be the new Surface to reach the market. Here is the video advertising Windows 8.1 .