Genuine Windows 8.1 Pro key
Full version 32-bit & 64-bit ISO
Installation assistance
Minimum system requirements
Processor: 1 gigahertz (GHz)
RAM: 1 GB (32-bit) or 2 GB (64-bit)
Hard disk space: 16 GB (32-bit) or 20 GB (64-bit)
Graphics card: Microsoft DirectX 9 graphics device
USB Flash Drive with at least 8GB of space or a blank single-layer DVD disk for a clean installation (not required if you are updating your system)