EDIT by moderator: Sorry the ordering of these posts is off, first read post #2 then read post #1 ===== Your drivers are rather out of date, so I'd start there. You can get new ones here: http://www.nvidia.fr/download/driverResults.aspx/80946/fr (Votre driver a besoin d'une mise à jour.)
@darckghost99 I've moved @DeathByDenim's answer into this thread, the ordering is a little off now. I hope you now figured out how to post stuff now: It is normal that posts of new users need approval of moderators. No need to do anything about that from your side.
It still crashes for you after updating the drivers? If so, can you make a new DxDiag.txt to see if the driver installation was successful? (PA a encore planté? Si oui, pourriez vous créez un nouveau DxDiag.txt pour vérifier que l'installation des pilots a été réussi?)
Huh, well, the driver update worked fine it seems. You don't have a lot of RAM though, so maybe that's the problem. Could you try increasing the size of your page file to 14 GB or more? (Vous n'avez pas beaucoup de mémoire vive. Pourriez vous augmenter la taille de la mémoire virtuelle à 14 Go ou plus? Instructions sont ici.) This is somewhat worrisome though: Not sure what that means...
Oh, that's neat! How did you do that? Dxdiag is no longer crashing according to your new DxDiag.txt either.
I do not know, on the other hand my game(set,play) does not work still :/ You think that if I reformat all my computer I could solve the problem?
Ah, I thought you meant you fixed the game. Reformatting your computer would likely help, although a bit overkill maybe. Before you do that though. Do you have any software from this list? http://steamcommunity.com/app/233250/discussions/2/558751813508748383/ Also, if you use Steam, could you try disabling the Steam overlay? (Le réinstaller de votre ordinateur aiderait, mais avant que vous le fassiez: Avez vous des logiciels sur la liste? Et si vous utilisez Steam, pourriez vous désactivez "Steam overlay"?)
Could you try downloading the UberLauncher instead and use that to play outside of Steam altogether? You can download it here: https://store.uberent.com/download/pa You may need to download DirectX (June 2010) and install that as well.
Huh? Your UberID for PA is not the same as the one you use for the forums? That's odd. When you actived the game for Steam you needed to make an UberID as well, right?
Try your steam login and password. It is linked to your UberID (PlayFab account) otherwise you wouldn't be able to play PA. You can check here: https://uberent.com/user/linkedsteamaccount