Screen freezed, when I pushed alt+tab button in order to switch to another program. Sound of the game was still going so I guess it is a problem with graphic. This problem sometimes occoured with my previous laptop (lenovo with NVIDIA graphic card) and so do now. I had to restart my computer, because there was no other option. Game was in full screen mode. When the error showed multiple times, I Swithed into windowed mode as recomended in “How to report client related bugs” topic. Currently I also use NVIDIA graphic card(more in dxdiag).
I am sending the dxdiag and log file(both located in DxDiag zip file). There is no exception file or folder in SC folder.
I hope you will solve it. Good luck!