Do not try this on your daily driver gaming PC. Use a virtual machine (VMware) running Windows 98 SE or, at most, Windows XP SP2. This is the only environment where the original DirectX drivers work natively.
If you are looking for the original data and functionality without modern "Square Enix bloat," there are specific technical hurdles to consider: final fantasy vii pc original unmodified codex
: This version is often cited as being based on a beta build of the PS1 game, leading to minor mechanical differences and inherent bugs. Why Modders Seek "Original Unmodified" Files Do not try this on your daily driver gaming PC