Microsoft does not offer a direct, public ISO download page for Windows 8.1 as prominently as Windows 10/11. However, they maintain a hidden tool that still works.

For daily tasks, upgrade to (support ends Oct 2025) or Windows 11 (active support).

A: Not natively. You must slipstream NVMe drivers into the ISO using MSI’s tool, or install on SATA mode.

Search for “MediaCreationTool_Win8.1_64bit.exe” from trusted archives. Run it, select “USB flash drive”, and it automates the process.