Problème Borderlands!

Bonsoir, voilà mon problème est que quand je lance le jeu, voilà ce que je reçois comme premier code d'erreur:

AppName: borderlands.exe AppVer: 1.0.1.0 ModName: nvtt.dll
ModVer: 2.0.4.0 Offset: 0000f2ea

puis une page apparaît:---------------------------
Message
---------------------------
General protection fault!



History: nvtt::OutputOptions::setOutputHeader() Address = 0x2c8f2ea (filename not found) [in c:\valve\steam\steamapps\common\borderlands\Binaries\nvtt.dll]

Address = 0x2c8142e (filename not found) [in c:\valve\steam\steamapps\common\borderlands\Binaries\nvtt.dll]

nvtt::Compressor::estimateSize() Address = 0x2c8366d (filename not found) [in c:\valve\steam\steamapps\common\borderlands\Binaries\nvtt.dll]

nvtt::Compressor::estimateSize() Address = 0x2c82ec6 (filename not found) [in c:\valve\steam\steamapps\common\borderlands\Binaries\nvtt.dll]

nvtt::Compressor::estimateSize() Address = 0x2c82a85 (filename not found) [in c:\valve\steam\steamapps\common\borderlands\Binaries\nvtt.dll]

puis encore un message! :

AppName: borderlands.exe AppVer: 1.0.1.0 ModName: borderlands.exe
ModVer: 1.0.1.0 Offset: 0069bc86

et voici les fichiers concernés:

F:\DOCUME~1\x~1\LOCALS~1\Temp\d900_appcompat.txt

F:\DOCUME~1\x~1\LOCALS~1\Temp\ab2e_appcompat.txt

voilà... je m'en remet à vous, merci.