Please, download and install also the Standalone application (not the zipped version), since it changes some Windows registry optimized for GPU rendering.
Anyway, if you are having chashes, most likely it is Nvidia driver dependent.
Please, if you are under Windows, go to Control Panel/Device Manager/Display adapters, and share a screenshot with us, thanks:
Then go to Control Panel/Nvidia Control Panel, press the System Informations link, and share another screenshot, thanks:
If you are under Mac, please go to
Apple menu
About this Mac, click on the osx version to show the exact number, and share a screenshot with us, thanks.
Then go to
System Preferences/CUDA and share another screenshot, thanks.
ciao Beppe