Citation de Tradition
Il semblerait que la solution soit dans le lien de Crea
"4) ONLY for "New Game" crashes BEFORE the intro movie plays:
Check the resolution set in fallout launcher options to see if it is sane, perhaps that alone will fix your problem.
Some computers do not have a video card, using only the wimpy graphics processor built into the CPU (Intel IGP). These users crash on the intro movie and need the following fix. STOP: This fix is only for people with intel HD graphics! If you have any ATI or Nvidia video card you shouldn't be using this!
Click here[www.nexusmods.com] and "download manually"
Right click the download to extract it
Drag only the d3d9x.dll file to your Fallout folder, probably at:
C:\Program Files (x86)\Steam\steamapps\common\Fallout 3 goty\
If Fallout Launcher Options still reports your card as "Intel HD", you put d3d9.dll in wrong directory!
Reset your resolution in fallout launcher options. Click "advanced" button and uncheck water reflections/refractions for performance reasons with IGP."
J'ai réussi à lancer la cinématique du début avec le lien nexus. Merci à tous

Ah bordel j'avais eu un souci similaire avec cette putain de DLL sur Skyrim, pourquoi je n'y ai pas songé

Bon game khey