Graphics card doesn't support DirectX 11, only DirectX 9 and DirectX 10. Editor is being launched in DirectX 11 mode and crashes immediately with such output in the log file:

(0x7102EA84) (nvumdshim): (filename not available): OpenAdapter10 + 0x6854
(0x71035032) (nvumdshim): (filename not available): OpenAdapter10 + 0xce02
(0x6B97F12F) (d3d11): (filename not available): D3D11CreateDeviceAndSwapChain + 0x1b7f8
(0x6B969107) (d3d11): (filename not available): D3D11CreateDeviceAndSwapChain + 0x57d0

Workaround is to use -force-d3d9 argument when launching Unity.

Command line examples:
http://docs.unity3d.com/Manual/CommandLineArguments.html

This issue might be by design, but Unity editor shouldn't crash at all, even when GPU doesn't support DirectX 11 mode;