Just upgraded to win10. Installed new graphic drivers for NVidia.

This is the crash report.
I noticed it doesn't detect the right processor. But the real issue seems to be:

...WARNING: fullscreen unavailable in this mode
...setting mode 5: 640 480 W
----- CL_Shutdown -----
RE_Shutdown( 1 )
Shutting down OpenGL subsystem
...wglMakeCurrent( NULL, NULL ): success
...deleting GL context: success
...releasing DC: success
...destroying window
...shutting down QGL
...unloading OpenGL DLL
-----------------------
GLW_CreateWindow: could not register window class

Tried reinstalling game and NVidia drivers. Doesn't change.