Iso Download 64-bit Version -x64- [new]: Microsoft Windows 8.1

To run the x64 version effectively, your PC must meet these minimums: Hard Disk Space: Processor: 1 GHz or faster with support for PAE, NX, and SSE2. DirectX 9 with WDDM driver. 🚀 Installation Steps Windows 8.1 Activation Issue - Microsoft Q&A

Click again.

No. There is no direct upgrade path from x86 to x64. You must perform a clean installation (wiping everything). Back up your files first. microsoft windows 8.1 iso download 64-bit version -x64-