Hi yarman
You may have a corrupted installation?
What SH5 version do you have?
Download
Dvd
Steam download.
Have you checked your gpu drivers are up to date?
Check that your graphic card settings are correct.
Post #239 Changing The Nvidia GPU Settings
Post #240 Changing AMD Radeon GPU Settings
Did Direct X install correctly if not then you can download this one.
DirectX 9.0C
Peter