Because vital system files have been tampered with by third parties, the OS can be unstable. You may encounter:
Instead of chasing a "Super Lite" mod, try official Windows 8.1 Embedded Industry Pro or Windows 10 LTSC (Long-Term Servicing Channel). Both are official, lightweight, and receive security updates. Then use a tool like O&O ShutUp10++ or Chris Titus Tech’s Windows Utility to de-bloat it yourself. windows 8 super lite 64 bits full
If you still decide to hunt for Windows 8 Super Lite 64 bits full (original filename often Win8.1.SuperLite.x64.Full.iso), run these sanity checks: Because vital system files have been tampered with