Windows 8 is a version of Microsoft Windows (an operating system produced by Microsoft) for use on personal computers, including home and business desktops, laptops, tablets, and home theater PCs. Development of Windows 8 started before the release of its predecessor, Windows 7, in 2009. Its existence was first announced at CES 2011, and followed by the release of three pre-release versions from September 2011 to May 2012. The operating system was released to manufacturing on August 1, 2012, and was released for general availability on October 26, 2012. Windows 8 uses version 6.2 of the Windows NT kernel.
Windows 8 introduces significant changes to the operating system's platform, primarily focused towards improving its user experience on mobile devices such as tablets to better compete with other mobile operating systems like Android and Apple's iOS. Windows 8 features a new touch user interface and shell based on Microsoft's "Metro" design language, featuring a new Start screen with a grid of dynamically updating tiles that represent applications. The Start screen replaces the "Start menu" of earlier Windows versions. There is a new app platform with an emphasis on touchscreen input, and the new Windows Store to obtain and/or purchase applications to run on the operating system.
Metro is an internal code name of a typography-based design language created by Microsoft, originally for use in Windows Phone. A key design principle of Metro is better focus on the content of applications, relying more on typography and less on graphics ("content before chrome"). Early uses of the Metro principles began as early as Microsoft Encarta 95 and MSN 2.0, and later evolved into Windows Media Center and Zune. Later the principles of Metro were included in Windows Phone, Microsoft's website, the Xbox 360 dashboard update, and Windows 8.
Here is how you can easily disable it without damaging your OS.
Please visit https://winaero.com and download MetroController
Install it to your windows 8 pc
Open it and then click” Disable metro features” button(careful to select only this feature otherwise you will lose the ribbon explorer also”)
Restart your pc
You are done! (You can get back the metro UI anytime you wish to by enabling it via MetroController)