Originally Posted by MOTpoetryION
Just a question isn't catalyst for your ATI video card? And if i recall correctly its not for a nvidia card , but you are also using the nvidia physX. Ive only used a nvidia card and thought physX was part of the software for the nvidia card? Is it a separate program? I'm just wondering why your running software for Both of them ?
I don't know very much when i installed portal 2 physx got automatically installed when i made a steam ticket about this. They reply me that i had to update nvidia physX however i uninstalled and installed it and didn't work