Windows 8.1 is an elevated version of Windows 8 for personal computers, and tablets. IT has all of its predecessor features, and more for Windows 8.1 brought back a familiar navigational feature, the Start Button, and made it easier to open, close and multitask among several apps using a mouse.
Download the ISO file of Windows 8.1
Click the Windows start button, and click Windows USB/DVD download tool
Click browse, and select the file from the OPEN dialog box, then click next.
Select USB DEVICE to create a copy on a USB flash drive or select DVD disk to create a copy on a DVD disk.
If you are copying the file to a USB flash drive, select your USB device in the drop-down list and click BEGIN COPYING. If you are copying the file up to a DVD, click BEGIN BURNING.
When your Windows ISO file is copied to your drive, install Windows by moving to the root folder of your DVD or USB drive, and then double-click Setup.exe