Problem with NVIDIA GPU driver

I have a notebook with an Intel core I7, Intel HD graphics 520 and NVIDIA gforce gtx 950M, running Fedora 24 with kernel 4.5.5. I am aware that this notebook is "an optimus notebook"

I want to use the gpu for training neural networks. So, I read this

how to install cuda y cudann

and

Official instructions for cuda

I followed the official instructions of the NVIDIA site. However, the notebook does not boot,. Instead, I get a blank screen. After two failures I found this

optimus notebook

I think that the nouveau driver dont get blacklisted correctly.

Please, can you give some advice about the installation?