OK, that’s why the accelerated hardware was unchecked. You’re running an unrecommended Intel graphics chip. When Rhino detects the Intel chip, it disables the accelerated hardware option. This is covered in the Rhino 5 System Requirements:
http://www.rhino3d.com/new/admin#system
http://wiki.mcneel.com/rhino/rhino5videocards
It looks like you chose a computer for Rhino without checking what Rhino’s requirements were.
If the shadow feature is important for you, you’ll need to get a different laptop computer with an AMD or Nvidia graphics card that supports the OpenGL and Shader requirements of Rhino V5. If you’re running a desktop, then you can probably install a supported graphics card.
Sorry.