: If your PC uses Secure Boot, ensure you use the 64-bit version and a GPT partition scheme to ensure the installer is recognized during startup. System Requirements
Without the Media Creation Tool to automatically flash your USB drive, you must use a reliable third-party utility to turn your downloaded ISO file into a bootable USB installer. The industry standard for this process is , a free, lightweight, open-source tool. Steps to Burn the ISO to USB Using Rufus:
Here is the best feature to look for in a :
Are you trying to or perform a completely clean install ? Do you already have a valid product key , or Share public link
Choose (or the K, KN, or Single Language editions if they match your original license) and click Confirm .
Once you have created your bootable USB drive, follow these steps to install Windows 8.1:
Disclaimer: This article is for educational purposes. Ensure you have a legal license for Windows 8.1 before installing. Microsoft ended support for Windows 8.1 on January 10, 2023; using it without security patches is not recommended for critical financial or healthcare systems.
Under "Partition scheme," select (for modern UEFI computers) or MBR (for older BIOS systems). Click "Start" to create the bootable drive. How to Install Windows 8.1 Using the Media Insert the USB into the target computer.
Complete Guide to Windows 8.1 64-Bit ISO and Media Creation The for direct download from Microsoft's official servers. Microsoft discontinued official support for Windows 8.1 on January 10, 2023, subsequently removing the utility from its software download portal. However, you can still securely obtain an official Windows 8.1 64-bit ISO and deploy it to a bootable USB drive.