Driver Inter 4600HD or NVIDIA 860m

We have a Lenovo Laptop y50 with a 4K resolution Monitor with the following card Intel HD 4600 and NVIDIA 8600M and they asked me to install Red Hat 7 even if i'm not an expert Linux user.

The problem is that aftyer the installation the only available resolution is the 4K resolution, and i cannot decrease it for a pratical user.
I have tried to download the NVIDIA driver(the latest two release) but i always receive an error during the installation and i had to stop it.

Any advice?