If You can perform a neat installation of Windows 8.1 from a DVD/CD or USB flash Drive then you purchased Windows 8.1 on DVD or purchased a download of Windows 8.1.A neat installation means your hard drive before installing Windows,make sure that you have backed up your All files and data
Note :
STEP 1 : hellow friends,firtly Turn on your PC/laptop so that Windows starts normally, insert the Windows 8.1 DVD/CD or USB flash drive, and then shut down/restart your PC.
STEP 2 : Restart your PC/laptop.Your PC/laptop will boot from Windows 8.1 DVD/CD or USB flash drive. Press any key when prompted by message "Press any key to boot from CD or DVD".
If you restart your PC and your current version of Windows starts,you might have to change the boot order in your PCs BIOS settings so that your PC boots from the media.
To change the boot order,youll generally press Delete key immediately after you turn on your PC. When you get into BIOS Setup Menu, please select Boot tab and set your media as the first boot order.
Move to Save & Exit tab, select [Save Changes and Reset] and leave BIOS Setup Menu.
STEP 3: After press any key please setup language along with other preferences and click [Next].
STEP 4: Then click Install now to start the process.
STEP 5 : Enter the product key to activate Windows 8.1 and click Next. (You should find the key in the disc package or in a message that shows you bought Windows or a find from google window 8.1 product key. If not, please contact disc provider.)
STEP 6 : Accept the license terms and conditons and then click Next.
STEP 7 : Choose the installation type you want.MSI recommend(Custom: Install Windows only (advanced)).
STEP 8 : Delete all existing partitions by selecting one partition at a time and then click Delete link.
STEP 9 : After that press OK when prompted/Popup by the message.
STEP 10 : All the space on the hard drive is now unallocated. Please create partitions by clicking [Drive options (advanced)].
STEP 11 : After that click [New] and decide a proper partition size for the partition.
STEP 12 : Good ! Now Windows will create another partition to store system files in. Please press [OK]. Follow step 10 to create partitions for the rest of unallocated space if required not then proceed to step 13.
STEP 13 : Select one partition and click [Format] link to perform partition format.
STEP 14 : You will be prompted to confirm the process. Press [OK]. Format other partitions as well except the one reserved for system files.
STEP 15 : Select the partition where you want to install Windows to and press [Next].
STEP 16 : Windows 8.1 is being installed and it will require several reboots during the process.
STEP 17 : Please follow instructions to personalize computer settings.
STEP 18 : Windows 8.1 is now installed successfully. Please perform Windows update and install the latest firmware/driver/app updates downloaded from multinational information technology website.