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[GeromeDoutrande]

When I installed ME2 on my laptop, the configuration utility would crash and when I tried to start the game it would cancel with an error message that included "failed to initialize physics system" (or close to that).

In my particular case, the NVidia PhysX driver did not install as part of the game installation. For me this happened because I had mapped some of the Windows 7 "My" folders (videos, music) to a network drive. This causes Windows to change registry keys that in turn cause some installers to fail to function (I had this issue before with a different software installer). I believe this issue occurs at least with Windows Vista and Windows 7.

To see whether this applies to you, check the following:

1. Do you get an error message that contains "failed to initialize physics system"?
2. If yes, check your start menu for a folder "NVIDIA Corporation". If you have the same problem as I did, the folder should NOT be in the start menu.
3. Try to install PhysX separately (redist folder on your disk (I assume, I have a steam copy) or digital download). If you have the same problem as I did, it should fail with a message "Invalid drive [drive letter]".

If that happens, you can fix the problem by doing what is described here (under option :
http://consumerdocs....ernalId=Q110636

After you changed the drive letters, install PhysX with the stand-alone installer. Once it is installed you can undo the changes in the registry again if you want.

I think this is a very rare problem, but maybe this helps someone else than me as well.