Select your preferred from the subsequent dropdown menu. Click Confirm .

To perform a clean (custom) installation:

The best and most trusted tool for this job is a free, open-source utility called . It is simple to use and extremely reliable. Here’s how to use it:

Are you looking to perform a or just trying to repair an existing Windows 8.1 system? Windows 8.1 support ended on January 10, 2023

Click the option you need to start saving the ISO file to your computer. Creating Bootable Installation Media

1 GHz or faster with support for PAE, NX, and SSE2.

Direct downloads for the official Windows 8.1 ISO from Microsoft's public software download pages are as of early 2023. Microsoft ended all support for Windows 8.1 on January 10, 2023, and removed the direct download links shortly after.

Select the drive partition where you want to install the operating system. Click to wipe previous data, or delete all existing partitions to create a single area of unallocated space. Select that space and click Next .

If you need any troubleshooting help during your installation, let me know: What or code are you running into? Are you attempting a clean install or an in-place upgrade ?

Once you reach the correct software download page, you will be prompted to provide your . After entering the key (e.g., a Windows 8.1 Pro key), the system will validate it.

Complete Guide to Downloading the Windows 8.1 Disc Image (ISO File) Legally