Exception access violation- mydocuments/overture problem

[Luis]

The problem seems to be in the nforce OpenAL actually. What puzzles me the most is that you said your brother had been playing fine...
One last thing to try for now, open the settings.cfg in the folder where the logs are stored, look for the UseSoundHardware="true" parameter and change it to UseSoundHardware="false", and run the game afterwards. Let me know how it went.