If you bought Windows 8.1 on DVD or created a DVD or USB flash drive when you purchased and downloaded Windows 8.1, follow these steps to perform a clean installation.
To perform a clean installation using a DVD or USB flash drive A clean installation typically means formatting your hard drive before installing Windows, so make sure that you have backed up your files and created recovery disc by MSI BurnRecovery tool before proceeding. You can perform a clean installation of Windows 8.1 if you purchased Windows 8.1 on DVD or purchased a download of Windows 8.1. Please refer to below webpage and Microsoft website for more information and restrictions. For others that are not on the list, MSI strongly recommend you upgrading system to Windows 8.1 via Windows store. Attention: This article applies to below MSI laptop models only.
