Microsoft has a specific page designed for Windows 7 and 8.1 recovery: https://www.microsoft.com/en-us/software-download/windows8
In the timeline of Microsoft operating systems, Windows 8.1 occupies a unique niche. Launched as a free update to the divisive Windows 8, it brought back the Start button, improved multi-monitor support, and offered performance boosts that still make it viable for older hardware. While Windows 10 and 11 dominate the market, millions of users still need the for specific reasons: running legacy software, reviving older laptops, or maintaining industrial equipment.
Do not use Windows 8.1 on any PC connected to the internet for banking, shopping, or sensitive work. Without patches, it’s vulnerable to over 800 known exploits.
Install the past to remember the way, Boot in the blue that taught you to play. x64 for the engines that still hum, Enter the code, the world will come.