Gothic 1 \ 2 won't start at all with ddraw.dll

[SleepingLulu]

For whatsoever reason, after playing a good 6 hours of Gothic 2 with DX11, the game won't start anymore.
At launch this error is displayed even with a fresh installation:

DX 11 won't work anymore even with Gothic 1.
I've just try to reinstall Nvidea game-ready driver and it seems to work succesfully again with DX11, until now, when this error message is displayed again at launch with ddraw.dll in Gothic\system folder.

Here it is the log file:

Log.txt

[Jurigag]

Maybe you have some kind of osd? Try to disable them.

[Katharsas]

OSDs, recording software, anti-virus software all can make problems.