Sorry if this is not the appropriate place to report that, but I've already reinstalled drivers and blender itself and the error goes on every time.
System Information
Windows 10 and NVIDIA GeForce 940M
Blender Version
Broken: 2.78 (sub 0)
When using Cycles Render and trying to use the Rendered method to display, only when I change to GPU under the
'Type of active data to display' menu->Device, it doesn't shows nothing but the "chess" screen and the error: "CUDA: error at cuCtxCreate: Launch failed".
Opens blender->Delete all objects->Cycles Render->Add mesh (text)->Apply material to mesh->Switch Device to GPU->Choose rendered view