You might have a weird monitoring program getting in the way of the D3D9.dll... try shutting everything off but steam.
Sounds like an issue with driver conflicts. Did you try all of the above instructions for the directx9 installs? the web installer doesn't install everything. What mods are you using?
Its not a problem with monitor programs, thats the first thing I check after something, anything really, fails to start, or load. My computer is completely up to date, so I should have the latest updates for Directx 9.
And as for mods:
Tonberry 2.04: Enhanced[forums.qhimm.com]
Tonberry Enhanced enables the replacement of texture files.
SeeD Reborn v3.5[forums.qhimm.com]
Text, Menu, and GUI Overhaul by MCINDUS
Project Eden v1.0[forums.qhimm.com]
Field Background 4x Upscale by Omzy
Triple Triad Texture Overhaul by MCINDUS
BattleField Upscale Project by MCINDUS and FatedCourage
Rebirth Flame v1.2[forums.qhimm.com]
Character Texture Project by FatedCourage
World Textures, Maps, and Vehicles Upscale by MCINDUS and FatedCourage
Project Hellfire v1.2[forums.qhimm.com]
GF Summon Replacement/Upscale Pack by MCINDUS and FatedCourage
Boss Upscale by FatedCourage
Lunar Cry v1.2[forums.qhimm.com]
Enemy Upscale (100% Complete) by MCINDUS
Basiclly all texture mods that was listed here https://steamcommunity.com/sharedfiles/filedetails/?id=391096600
Except for World UV Texture Patch[forums.qhimm.com] by MaKiPL
EDIT: I do recall during installation of all the mods that some folders and files asked to be replaced/moved, I simply replaced them every time, cause I was told that all these mods should go together. Maybe Im wrong?
2nd EDIT: by running compatibility mode Windows XP service pack 2, I manage to load the launcher for 0.5 seconds before it disappears (completely serious here) if I time it correctly I can manage to press play game before the launcher disappears, and the game starts fine, I also know some mods, or all mods, are working since the font has changed to the bold one at the new game/ load save menu.
I press load save, selects a save where I know im on the overworld(if that helps) the moment the load bar is finished after selecting the save I want, the game freezes.