Ok..thanks for your answer. Is there any solution for my problem ?
Difficult to know, without knowing what the problem is. Unfortunately, FSX doesn't have a logging feature that could indicate which scenery/file/texture it was trying to access when it stopped at that 36% so, it's only possible to proceed by exclusion.
Do you use 3rd party default scenery replacement products like Flight1 Ultimate Terrain or Orbx FTX Global ? You might start with disabling/uninstalling those. But, it's also possible a default file/texture could be missing or corrupted.
Try to load with a different season. If this fixes the problem, it means the problem is with a texture of a specific season (which can be either default or 3rd party)