Visit the Microsoft Software Download page for Windows 8.1.
Choose "Custom: Install Windows only (advanced)" if you want a clean installation. This allows you to delete old partitions and start fresh.
When prompted, enter your Windows 8.1 product key. download windows 8.1 disc image -iso file- - microsoft
You can find troubleshooting steps and community support on the Microsoft Community Hub or Microsoft Q&A .
Follow these steps to get the official ISO file from the Microsoft website : Visit the Microsoft Software Download page for Windows 8
This guide covers everything you need to know about downloading, preparing, and installing Windows 8.1 using an ISO file. 1. Prerequisites Before You Begin
You need at least 4.5 GB of free space on your computer to save the download. When prompted, enter your Windows 8
The download will begin automatically. The link provided is typically valid for 24 hours from the time of creation. 3. Creating Bootable Installation Media